CN114428179A - Off-line simulation inspection method and system for rotating speed probe - Google Patents
Off-line simulation inspection method and system for rotating speed probe Download PDFInfo
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- CN114428179A CN114428179A CN202011049962.8A CN202011049962A CN114428179A CN 114428179 A CN114428179 A CN 114428179A CN 202011049962 A CN202011049962 A CN 202011049962A CN 114428179 A CN114428179 A CN 114428179A
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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
- G01P21/00—Testing or calibrating of apparatus or devices covered by the preceding groups
- G01P21/02—Testing or calibrating of apparatus or devices covered by the preceding groups of speedometers
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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
- G01P1/00—Details of instruments
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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
- G01P1/00—Details of instruments
- G01P1/12—Recording devices
- G01P1/122—Speed recorders
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Abstract
The embodiment of the invention provides a method and a system for off-line simulation inspection of a rotating speed probe, belonging to the technical field of simulation verification. The system comprises: the mounting table is provided with a protective cover, the protective cover is internally provided with replaceable speed measuring discs and a set number of rotating speed probes, and the mounting gap between the speed measuring discs and the rotating speed probes is a set distance; the signal acquisition device acquires the actual rotating speed and the gap voltage of the speed measuring disc at the preset rotating speed through the rotating speed probe; the motor speed changing device provides rotary power for the speed measuring disc to drive the speed measuring disc to rotate; the controller receives a preset rotating speed and provides the preset rotating speed for the motor speed changing device so as to drive the speed measuring disc to rotate; acquiring the actual rotating speed and the gap voltage of a speed measuring disc at a preset rotating speed; adjusting the set distance between the rotating speed probe and the speed measuring disc according to the actual rotating speed and the calibration waveform corresponding to the gap voltage until the calibration waveform is a non-distorted waveform, and determining the target distance; the display device displays the actual rotating speed, the gap voltage and the check waveform; a power supply for providing power.
Description
Technical Field
The invention relates to the technical field of simulation verification, in particular to a method and a system for off-line simulation inspection of a rotating speed probe.
Background
The rotating speed probe of large-scale units such as petroleum refining, chemical production devices and power station steam turbine units is generally a magnetic resistance type probe, a fixed speed measuring disc is generally adopted for rotating speed calibration of the rotating speed probe in the units at present, the speed measuring disc cannot be replaced, and only the precision of the probe is calibrated. The rotational speed probe is generally installed according to the installation gap recorded when the field probe is removed, or according to the installation gap specified in the specification. For the installation clearance between the rotating speed probe and the speed measuring disc, the rotating speed wave loss or multiplication occurs after the installation due to the reasons of measuring errors, installation modes and the like, so that the unit fluctuation is caused, and even the detection errors such as vehicle jumping and the like are caused. As shown in figure 1, the waveform of the speed measuring disc checked at the rotating speed of 4000rpm under the condition that the installation clearance between the speed measuring disc and a rotating speed probe of a steam turbine of a certain hydrogenation device is 0.8mm, wherein the abscissa is time, the ordinate is a clearance voltage value, the maximum rotating speed measured at the moment is 4718rpm, and the waveform can be seen to have serious distortion. And after the installation clearance between the speed measuring probe and the speed measuring disk is adjusted to be 1.0mm, the waveform under the same rotating speed is shown in figure 2, the measured rotating speed is 4000rpm, the error does not exceed 1rpm, the obtained waveform is more standard than that in figure 1, and the phenomenon that the improper installation clearance between the speed measuring disk and the speed measuring probe easily causes serious rotating speed distortion can be seen. However, after a problem is found, the cover of the unit with the speed measuring disc device needs to be opened, the mounting gap between the speed measuring disc and the rotating speed probe needs to be readjusted, the adjustment amount is adjusted, the adjustment is increased or decreased, the adjustment is usually performed according to experience, the subjective awareness is strong, the adjusted effect needs to be restarted for testing, and the repeated adjustment is time-consuming and labor-consuming in starting.
Disclosure of Invention
The invention aims to provide a method and a system for offline simulation inspection of a speed measuring probe, which solve the problems that a speed measuring disk in a speed measuring calibration device in the prior art can not be replaced and can not be calibrated according to the specification and structure materials of an actual speed measuring disk on site, and the installation gap between the speed measuring probe and the speed measuring disk needs to be adjusted continuously according to experience, can manufacture the same speed measuring disk for rotation speed calibration according to the rule of 1:1 aiming at different speed measuring disks on a unit site by changing the existing fixed type speed measuring calibration device into a split type structure, and can adjust the set distance between the speed measuring disk and the speed measuring probe according to the set distance between the speed measuring disk and the speed measuring probe and the corresponding calibration waveform obtained at the preset rotation speed until the calibration waveform is a non-distorted waveform, determine the set distance between the speed measuring probe and the speed measuring disk as a target distance, the device provides reference and data support for field rotating speed probe installation, greatly improves the verification precision and reliability, improves the installation accuracy and reliability, prevents the large unit from being repeatedly disassembled and assembled due to the rotating speed probe problem, shortens the overhaul time, reduces the workload, improves the rotating speed reliability, and ensures the stable operation of the large unit.
In order to achieve the above object, an embodiment of the present invention provides an off-line simulation inspection system for a speed probe, including: the mounting table is provided with a protective cover and used for mounting replaceable speed measuring discs and a set number of speed measuring probes in the protective cover, and a mounting gap between each speed measuring probe and the corresponding speed measuring disc is a set distance; the signal acquisition device is used for acquiring the actual rotating speed and the gap voltage of the speed measuring disc at the preset rotating speed through the rotating speed probe; the motor speed changing device is used for providing rotary power for the speed measuring disc to drive the speed measuring disc to rotate; the controller is used for receiving the preset rotating speed and providing the preset rotating speed for the motor speed changing device so as to drive the speed measuring disc to rotate; acquiring the actual rotating speed and the gap voltage of the speed measuring disc at the preset rotating speed through the signal acquisition device; adjusting the set distance between the rotating speed probe and the speed measuring disk according to the obtained actual rotating speed and the calibration waveform corresponding to the gap voltage until the calibration waveform is a non-distorted waveform, and determining the set distance between the rotating speed probe and the speed measuring disk as a target distance; the display device is used for displaying the actual rotating speed, the gap voltage and the check waveform; and the power supply is used for supplying power to the signal acquisition device, the motor speed change device, the controller and the display device.
Further, the replaceable speed measuring disk is the same as an actual speed measuring disk used by the field unit.
Further, the central point of removable speed measuring dish puts and is provided with the mounting hole, the inner wall of mounting hole is provided with the draw-in groove, the draw-in groove is followed the radial outside sunken of mounting hole.
Further, the mounting table further comprises a replaceable mounting support, and the mounting support matched with the thread specification of the rotating speed probe is arranged according to the specification and the model of the rotating speed probe.
Further, when a non-distorted waveform cannot be obtained after the set distance between the speed probe and the speed measuring disk is adjusted, at least one of the tooth width, the tooth depth or the tooth number of the speed measuring disk is optimized.
Further, the controller is further configured to generate a rotation speed measurement record, where the rotation speed measurement record includes information of the rotation speed probe, information of the speed measurement disk, the set distance, the preset rotation speed, the actual rotation speed, and the gap voltage.
Correspondingly, the embodiment of the invention also provides a method for off-line simulation inspection of the rotating speed probe, which is applied to the above-mentioned system for off-line simulation inspection of the rotating speed probe, and the method comprises the following steps: receiving a preset rotating speed of a speed measuring disc; acquiring the actual rotating speed and the gap voltage of the speed measuring disc at the preset rotating speed; and adjusting the set distance between the rotating speed probe and the speed measuring disk according to the obtained actual rotating speed and the calibration waveform corresponding to the gap voltage until the calibration waveform is a non-distorted waveform, and determining the set distance between the rotating speed probe and the speed measuring disk as a target distance.
Further, the method further comprises: and when a non-distorted waveform cannot be obtained after the set distance between the rotating speed probe and the speed measuring disk is adjusted, optimizing at least one of the tooth width, the tooth depth or the tooth number of the speed measuring disk.
The embodiment of the invention can collect waveforms and effective values under different installation gaps and different rotating speeds, and records and derives data, thereby determining the optimal installation gap, namely the target distance between the rotating speed probe and the speed measuring disc, providing accurate data support for the field actual rotating speed probe installation, greatly improving the verification precision and reliability, improving the installation accuracy and reliability, preventing the large unit from being repeatedly disassembled and assembled due to the rotating speed probe, shortening the overhaul time, reducing the workload, improving the rotating speed reliability, and ensuring the stable operation of the large unit.
Additional features and advantages of embodiments of the invention will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the embodiments of the invention without limiting the embodiments of the invention. In the drawings:
FIG. 1 is a schematic diagram of a calibration waveform obtained by a conventional calibration apparatus;
FIG. 2 is a schematic diagram of another calibration waveform obtained by a conventional calibration apparatus;
fig. 3 is a schematic structural diagram of an off-line simulation inspection system for a speed probe according to an embodiment of the present invention;
fig. 4 is a schematic diagram illustrating the opening specification of the speed measuring disk mounting hole provided in the embodiment of the present invention;
FIG. 5 is a schematic structural diagram of another rotational speed probe off-line simulation inspection system according to an embodiment of the present invention;
FIG. 6 is an exemplary tachograph record provided by an embodiment of the present invention;
FIG. 7 is another exemplary tachometer record provided by embodiments of the present invention;
FIG. 8 is a schematic diagram of a calibration waveform according to an embodiment of the present invention;
FIG. 9 is a schematic diagram of another verification waveform provided by embodiments of the present invention;
FIG. 10 is an exemplary tachograph record provided by an embodiment of the present invention;
fig. 11 is a schematic flow chart of an off-line simulation inspection method for a speed probe according to an embodiment of the present invention.
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating embodiments of the invention, are given by way of illustration and explanation only, not limitation.
Fig. 3 is a schematic structural diagram of an offline simulation inspection system for a speed probe according to an embodiment of the present invention. As shown in fig. 3, the system 30 includes: the mounting table 31 is provided with a protective cover and is used for mounting replaceable speed measuring discs 311 and a set number of speed measuring probes 312 in the protective cover, and a mounting gap between each speed measuring probe and each speed measuring disc is a set distance; the signal acquisition device 32 is used for acquiring the actual rotating speed and the gap voltage of the speed measuring disc at a preset rotating speed through the rotating speed probe; the motor speed changing device 33 is used for providing rotary power for the speed measuring disc to drive the speed measuring disc to rotate; the controller 34 is configured to receive the preset rotation speed and provide the preset rotation speed to the motor speed changing device to drive the speed measuring disk to rotate; acquiring the actual rotating speed and the gap voltage of the speed measuring disc at the preset rotating speed through the signal acquisition device; adjusting the set distance between the rotating speed probe and the speed measuring disk according to the obtained actual rotating speed and the calibration waveform corresponding to the gap voltage until the calibration waveform is a non-distorted waveform, and determining the set distance between the rotating speed probe and the speed measuring disk as a target distance; a display device 35 for displaying the actual rotation speed, the gap voltage and the calibration waveform; and a power supply 36 for supplying power to the signal acquisition device, the motor transmission, the controller and the display device.
The method comprises the steps of collecting data of size, shape and material (material spectral analysis) of a speed measuring disc in a large unit in practical application, and manufacturing the speed measuring disc according to the specification of 1: 1. That is to say, the speed measuring disk to be verified in the verification system of the embodiment of the present invention is completely the same as the actual speed measuring disk used by the field unit, and the speed measuring disk to be verified can be replaced at will. In addition, the types of the rotating speed probe, the extension cable and the like used in the checking system are completely the same as those used in the field unit, so that the structure of the field is completely copied, and the accuracy of the final determination result is ensured.
In addition, before each speed measuring disc to be verified is installed on the installation platform, an installation hole needs to be uniformly formed in the center of each speed measuring disc, the opening specification of each speed measuring disc is as shown in fig. 4, the aperture range of the installation hole is 12mm-13.5mm, a clamping groove is formed in the inner wall of each installation hole, the clamping groove is recessed outwards in the radial direction of the installation hole, the length of each clamping groove is 3mm, and the width of each clamping groove is 1.5 mm.
Correspondingly, due to the difference of the actual types of the rotation speed probes during the verification, as shown in fig. 5, the mounting table further comprises a replaceable mounting bracket 51, and a mounting bracket matched with the thread specification of the rotation speed probe is arranged according to the specification type of the rotation speed probe. For example, the thread specifications of the mounting bracket include 3/4-20UNEF-2A M18 × 1, 3/8-24 UNEF-2A M12 × 1, 5/8-18UNEF-2A M10 × 1, M16 × 1M22 × 1.0 × 28, etc., and can be processed according to the needs. In the embodiment of the present invention, the number of the speed probes may be a set number, for example, 4, but may also be other numbers, and may be set as required. The type of the rotational speed probe which can be verified in the embodiment of the invention comprises an eddy current sensor, a Hall sensor, a magnetoelectric sensor and the like, the maximum range of the rotational speed can reach 10000rpm, and the precision is less than 2 rpm/min. When the rotating speed probes are selected, any number of the rotating speed probes with the set number can be selected, namely, the signal acquisition device can acquire data through the sensor channels corresponding to the rotating speed probes with any number through the cable. When the rotating speed probe is installed, the probe can be installed on a specified installation support, the probe is rotated clockwise in an installation hole of the installation support (when the probe is rotated, the head is supported by one hand, and the other hand rotates), so that the rotating speed probe is installed at the position of a convex tooth of the speed measuring disc or the position closest to the end face of the probe. And the set distance between the rotating speed probe and the speed measuring disc can be measured by a feeler gauge, and after different set distances are set and the set distances are determined by the feeler gauge, simulation verification is carried out.
Optionally, the verification system in the embodiment of the present invention has two modes, namely, manual verification and automatic verification. In the manual calibration mode, the calibration system may further include an input device for manually inputting the preset rotation speed. Of course, the input device may also be integrated in the display device to touch the display device presentation. And in the automatic verification mode, automatically verifying according to a preset rotating speed. The rotation speed signal types supported by the embodiment of the invention comprise: magnetoelectric tachometric transducer, hall sensor, eddy current sensor, the sensor corresponds passageway check-up data independent each other, and the check-up is accomplished and is carried out data storage, and generates the rotational speed and measures the record, promptly the controller still is used for generating the rotational speed and measures the record, the rotational speed is measured the record and is included the information of speed probe the information of the dish that tests the speed set for the distance preset the rotational speed actual rotational speed gap voltage, like the rotational speed measurement record example that the automatic check-up shown in fig. 6 generated.
In an implementation manner of the embodiment of the present invention, when a non-distorted waveform cannot be obtained after adjusting the set distance between the speed probe and the speed measuring dial, a manner of optimizing at least one of a tooth width, a tooth depth, or a tooth number of the speed measuring dial may be adopted.
For example, the rotation speed of a certain catalytic unit gas compressor fluctuates in the starting process of the previous period, and then the installation clearance of the rotation speed probe is adjusted to be normal temporarily, but the fluctuation reason is not found, so that the rotation speed fluctuation can occur again at any time. The speed measuring disc on the aerostatic press is verified through the verification system in the embodiment of the invention, and the installation is carried out according to the actual installation gap on site. In the checking process, it is found that clutter appears at the rotating speed from 3500rpm, which causes the measured rotating speed to be higher, even multiplied, the generated rotating speed measurement record is shown in fig. 7, when the rotating speed fluctuates, the preset rotating speed is 4000rpm, and the waveform when the installation gap is 0.8mm is shown in fig. 8, wherein the abscissa is time, and the ordinate is the gap voltage value. After the installation clearance of the rotating speed probe is readjusted, the noise is basically eliminated, but the effective value of the waveform is attenuated, and the waveform is shown in fig. 9. According to the past experience, the speed measuring disc is optimized by combining the size parameter of the speed measuring disc, the tooth width is changed from 5.2mm to 4.2mm, the speed measuring disc after being newly processed is verified, and the generated rotating speed measuring record is shown in figure 10 under the same installation clearance. It can be seen from the record that after the specification of the speed measuring disk is optimized, the effective value and accuracy of the rotating speed are obviously improved. After the verified rotating speed probe is installed according to the installation gap during verification, the unit is successfully driven once, the rotating speed does not fluctuate, and the rotating speed is accurate and reliable.
The controller in the embodiment of the invention can also comprise a driving controller and a central controller of the motor speed changing device, and the driving controller can send a driving signal to the motor speed changing device after acquiring the starting signal from the central controller, so as to drive the speed measuring disk to rotate. The power supply provides power for the checking system and supports power supply of each internal device.
Optionally, in the embodiment of the present invention, the controller and the signal acquisition device may be integrated into a portable aluminum alloy box, and the motor speed change device may be disposed in a box.
Compared with the calibration device in the prior art, the off-line simulation inspection system for the rotating speed probe in the embodiment of the invention can calibrate the speed measuring discs of different models, and adopts the replaceable rotating speed probe mounting bracket to adapt to the rotating speed probes of different thread specifications. The embodiment of the invention can collect waveforms and effective values under different installation gaps and different rotating speeds, and records and derives data, thereby determining the optimal installation gap, namely the target distance between the rotating speed probe and the speed measuring disc, providing accurate data support for the field actual rotating speed probe installation, greatly improving the verification precision and reliability, improving the installation accuracy and reliability, preventing the large unit from being repeatedly disassembled and assembled due to the rotating speed probe, shortening the overhaul time, reducing the workload, improving the rotating speed reliability, and ensuring the stable operation of the large unit. Meanwhile, the tooth width of the speed measuring disc can be optimized to ensure that the unit is successfully driven once.
Correspondingly, fig. 11 is a schematic flow chart of an off-line simulation inspection method for a speed probe according to an embodiment of the present invention. As shown in fig. 11, the method applied to the rotational speed probe off-line simulation inspection system according to the above embodiment includes the following steps:
step 1103, adjusting the set distance between the speed probe and the speed measuring disk according to the obtained actual rotation speed and the calibration waveform corresponding to the gap voltage until the calibration waveform is a non-distorted waveform, and determining that the set distance between the speed probe and the speed measuring disk is a target distance.
The preset rotating speed can be manually input or the rotating speed set by a software program in advance.
After the actual rotating speed and the gap voltage are obtained, a corresponding calibration waveform can be generated, if the waveform is distorted, a set distance between the rotating speed probe and the speed measuring disk can be adjusted by using a feeler gauge, calibration is performed again until the obtained calibration waveform is a non-distorted waveform, the set distance between the rotating speed probe and the speed measuring disk at the moment is a target distance, and the installation gap between the rotating speed probe and the speed measuring disk in the field unit at the target distance can be used.
In addition, when a non-distorted waveform cannot be obtained after the set distance between the speed probe and the speed measuring disk is adjusted, at least one of the tooth width, the tooth depth or the tooth number of the speed measuring disk is redesigned during overhaul of the unit, and after verification, the optimized tooth width is determined when the non-distorted waveform is obtained.
The embodiment of the invention can collect waveforms and effective values under different installation gaps and different rotating speeds, and records and derives data, thereby determining the optimal installation gap, namely the target distance between the rotating speed probe and the speed measuring disc, providing accurate data support for the field actual rotating speed probe installation, greatly improving the verification precision and reliability, improving the installation accuracy and reliability, preventing the large unit from being repeatedly disassembled and assembled due to the rotating speed probe, shortening the overhaul time, reducing the workload, improving the rotating speed reliability, and ensuring the stable operation of the large unit. Meanwhile, the tooth width of the speed measuring disc can be optimized to ensure that the unit is successfully driven once.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in the process, method, article, or apparatus that comprises the element.
The above are merely examples of the present application and are not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.
Claims (8)
1. An off-line simulation inspection system for a rotating speed probe is characterized by comprising:
the mounting table is provided with a protective cover and used for mounting replaceable speed measuring discs and a set number of speed measuring probes in the protective cover, and a mounting gap between each speed measuring probe and the corresponding speed measuring disc is a set distance;
the signal acquisition device is used for acquiring the actual rotating speed and the gap voltage of the speed measuring disc at the preset rotating speed through the rotating speed probe;
the motor speed changing device is used for providing rotary power for the speed measuring disc to drive the speed measuring disc to rotate;
the controller is used for receiving the preset rotating speed and providing the preset rotating speed for the motor speed changing device so as to drive the speed measuring disc to rotate; acquiring the actual rotating speed and the gap voltage of the speed measuring disc at the preset rotating speed through the signal acquisition device; adjusting the set distance between the rotating speed probe and the speed measuring disk according to the obtained actual rotating speed and the calibration waveform corresponding to the gap voltage until the calibration waveform is a non-distorted waveform, and determining the set distance between the rotating speed probe and the speed measuring disk as a target distance;
the display device is used for displaying the actual rotating speed, the gap voltage and the check waveform; and
and the power supply is used for providing electric power for the signal acquisition device, the motor speed change device, the controller and the display device.
2. The rotational speed probe off-line simulation inspection system according to claim 1, wherein the replaceable speed measuring disk is the same as an actual speed measuring disk used by a field unit.
3. The rotational speed probe off-line simulation inspection system according to claim 1, wherein a mounting hole is formed in a central position of the replaceable speed measuring disc, and a clamping groove is formed in an inner wall of the mounting hole and is recessed outwards in a radial direction of the mounting hole.
4. A rotational speed probe off-line simulation inspection system as claimed in claim 1, wherein the mounting table further comprises a replaceable mounting bracket, and the mounting bracket is configured to match the thread specification of the rotational speed probe according to the specification model of the rotational speed probe.
5. A speed probe off-line simulation inspection system according to claim 1, wherein at least one of a tooth width, a tooth depth or a number of teeth of the speed dial is optimized when a non-distorted waveform cannot be obtained after adjusting the set distance between the speed probe and the speed dial.
6. A speed probe off-line simulation inspection system according to claim 1, wherein the controller is further configured to generate a speed measurement record, and the speed measurement record includes information of the speed probe, information of the speed dial, the set distance, the preset speed, the actual speed, and the gap voltage.
7. A method for off-line simulation inspection of a speed probe, which is applied to the off-line simulation inspection system of a speed probe according to any one of claims 1 to 6, and comprises the following steps:
receiving a preset rotating speed of a speed measuring disc;
acquiring the actual rotating speed and the gap voltage of the speed measuring disc at the preset rotating speed;
and adjusting the set distance between the rotating speed probe and the speed measuring disk according to the obtained actual rotating speed and the calibration waveform corresponding to the gap voltage until the calibration waveform is a non-distorted waveform, and determining the set distance between the rotating speed probe and the speed measuring disk as a target distance.
8. A method for off-line simulation inspection of a rotational speed probe according to claim 7, wherein the method further comprises:
and when a non-distorted waveform cannot be obtained after the set distance between the rotating speed probe and the speed measuring disk is adjusted, optimizing at least one of the tooth width, the tooth depth or the tooth number of the speed measuring disk.
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| CN202011049962.8A CN114428179A (en) | 2020-09-29 | 2020-09-29 | Off-line simulation inspection method and system for rotating speed probe |
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| CN202011049962.8A CN114428179A (en) | 2020-09-29 | 2020-09-29 | Off-line simulation inspection method and system for rotating speed probe |
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| CN209102754U (en) * | 2018-10-24 | 2019-07-12 | 中核核电运行管理有限公司 | A kind of diesel engine speed sensor calibration device |
| CN111351963A (en) * | 2018-12-20 | 2020-06-30 | 陆博汽车电子（曲阜）有限公司 | Position adjusting method and device of wheel speed sensor and testing equipment thereof |
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2020
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09196947A (en) * | 1996-01-18 | 1997-07-31 | Mitsubishi Heavy Ind Ltd | Verification device for detector for rotating speed |
| CN104090129A (en) * | 2014-07-24 | 2014-10-08 | 大陆汽车电子(长春)有限公司 | Matching testing method and system used for wheel speed sensor and target wheel |
| CN205038231U (en) * | 2015-09-21 | 2016-02-17 | 大亚湾核电运营管理有限责任公司 | Supplementary water supply system pneumatic pump rotational speed accuracy of measurement's of nuclear power station calibration equipment |
| CN105527460A (en) * | 2016-01-25 | 2016-04-27 | 宁波南车时代传感技术有限公司 | Speed sensor testing device and measurement method |
| CN106066408A (en) * | 2016-05-24 | 2016-11-02 | 淮海工学院 | Three level wheel speed sensors test System and method fors based on brake process |
| CN209102754U (en) * | 2018-10-24 | 2019-07-12 | 中核核电运行管理有限公司 | A kind of diesel engine speed sensor calibration device |
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