CN102608358A - System and method for multi-sensor comparative rotation speed test - Google Patents
System and method for multi-sensor comparative rotation speed test Download PDFInfo
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- CN102608358A CN102608358A CN2012100623395A CN201210062339A CN102608358A CN 102608358 A CN102608358 A CN 102608358A CN 2012100623395 A CN2012100623395 A CN 2012100623395A CN 201210062339 A CN201210062339 A CN 201210062339A CN 102608358 A CN102608358 A CN 102608358A
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Abstract
The invention discloses a system and a method for multi-sensor comparative rotation speed test, which relate to the technical field of rotation speed measurement. The system comprises a servo motor, a signal generator, a processing unit and at least two rotation speed sensors. The servo motor comprises a rotary encoder. The processing unit is respectively connected with the rotary encoder, the rotation speed sensors, the servo motor and the signal generator. The rotation speed measured by the high-precision rotary encoder is used as standard, confidential level of comparison results of the different rotation speed sensors is increased, and accuracy comparison among the different rotation speed sensors and comparison of measuring accuracy and resolution among the different sensors are achieved further.
Description
Technical field
The present invention relates to the tachometric survey technical field, particularly a kind of multisensor is type speed test system and method relatively.
Background technology
The speed test platform is a kind of test unit that is used for simulating actual rotating machinery dynamic behavior, is mainly used in the kinetic characteristic of laboratory proofing flex rotor.Through selecting dissimilar speed probes to carry out tachometric survey, can effectively react relative merits and the scope of application of all kinds of speed probes in tachometric survey.Therefore this testing table provides laboratory facilities effectively easily for being engaged in engineering test research and each relevant laboratory of big universities and colleges, is the speed test system that a cover is very suitable for scientific research, teaching and training demonstration.
Use many speed test platforms at present single speed probe measurement pattern and many speed probes measurement pattern are arranged.If single speed probe measurement pattern is because selected sensor is comparatively single and realize that the mode of tachometric survey is limited, therefore can not the choose reasonable testing sensor, then can't realize the accurate measurement to rotating speed; The sensor kind that many speed probes measurement pattern is selected for use is more; Decapacitation realizes multiple tachometric survey mode, satisfies outside the different measuring requirement; The user can also compare the scope of application and the condition of dissimilar sensor, and therefore this measurement pattern is a main trend of present speed test platform development.
But existing speed test platform can only carry out the contrast of accuracy each other under same method of testing of different rotating speeds sensor, lacks rated rotational frequency and does reference, causes comparative result to lack confidence level.
Summary of the invention
The technical matters that (one) will solve
The technical matters that the present invention will solve is: how to make the different rotating speeds sensor have reference, improve the confidence level of different rotating speeds sensor comparative result.
(2) technical scheme
For solving the problems of the technologies described above; The invention provides relatively type speed test system of a kind of multisensor; Said system comprises: servomotor, signal generation apparatus, processing unit and at least two speed probes; Said servomotor comprises rotary encoder; Said processing unit is connected respectively with said rotary encoder, two speed probes, servomotor and signal generation apparatus at least, and when said servomotor drove said signal generation apparatus and is rotated, said at least two speed probes received the signal that is sent by said signal generation apparatus respectively; Said processing unit is a standard with the measured reference rotation velocity of said rotary encoder, and the tach signal that said at least two speed probes are produced compares.
Preferably, the comparative result of the said processing unit tach signal that also is used for producing according to said at least two speed probes and the reference rotation velocity of said rotary encoder carries out accuracy to said at least two speed probes and contrasts.
Preferably; The said processing unit also continuous tach signal through receiving said at least two speed probes compares with the continuous reference rotation velocity of said rotary encoder respectively, to realize the measuring accuracy of said at least two speed probes and the contrast of resolving power.
Preferably, said system also comprises: display unit, said display unit are used to show the comparative result of the reference rotation velocity of tach signal that said at least two speed probes produce and said rotary encoder.
Preferably; Said system also comprises: testing table; Said testing table comprises: base and rotating shaft; Said servomotor, signal generation apparatus and speed probe are removable respectively to be installed on the said base, and said signal generation apparatus is located in the said rotating shaft, and the rotor of said servomotor is connected with said rotating shaft.
Preferably, said at least two speed probes are selected from magnetoelectric tachometric transducer, correlation photoelectric sensor, diffuse reflection type photoelectric sensor, inductance type transducer, hall sensor, fluted body photoelectric sensor, reflective photoelectric sensor, gear velocity sensor and reluctance type speed probe.
The invention also discloses a kind ofly, said method comprising the steps of based on the said multisensor test method of type speed test system relatively:
S1: servomotor drives signal generation apparatus and is rotated, the signal that at least two speed probes receive said signal generation apparatus respectively and sent;
S2: processing unit receives the tach signal that the reference rotation velocity that rotary encoder sent and said at least two speed probes in the said servomotor produce;
S3: said processing unit compares the tach signal that said two speed probes produce respectively at least with said reference rotation velocity.
Preferably, also comprise step after the step S3:
S401: the tach signal that said processing unit produces according to said two speed probes at least carries out accuracy with the comparative result of the reference rotation velocity of said rotary encoder to said at least two speed probes and contrasts.
Preferably, further comprising the steps of after the step S3:
S411: the continuous tach signal that said processing unit receives said at least two speed probes compares with the continuous reference rotation velocity of said rotary encoder respectively, to realize the measuring accuracy of said at least two speed probes and the contrast of resolving power.
Preferably, processing unit described in the step S411 adopts the measured frequency method, surveys the said continuous tach signal of at least a acquisition in periodic method and the measured frequency/periodic method.
(3) beneficial effect
It is standard that the present invention records rotating speed through high-precision rotary encoder; Improve the confidence level of different rotating speeds sensor comparative result, and further realized accuracy contrast and the measuring accuracy of different sensors and the contrast of resolving power between the different rotating speeds sensor.
Description of drawings
Fig. 1 is the structured flowchart that compares type speed test system according to the multisensor of one embodiment of the present invention;
Fig. 2 is the concrete structure synoptic diagram that compares type speed test system according to the multisensor of an embodiment of the present invention.
Embodiment
Below in conjunction with accompanying drawing and embodiment, specific embodiments of the invention describes in further detail.Following examples are used to explain the present invention, but are not used for limiting scope of the present invention.
Fig. 1 is the structured flowchart that compares type speed test system according to the multisensor of one embodiment of the present invention; With reference to Fig. 1; Said system comprises: servomotor, signal generation apparatus, processing unit and at least two speed probes; Said servomotor comprises rotary encoder; Said processing unit is connected respectively with said rotary encoder, two speed probes, servomotor and signal generation apparatus at least; When said servomotor drove said signal generation apparatus and is rotated, said at least two speed probes received the signal that is sent by said signal generation apparatus respectively, and the tach signal that said processing unit produces said at least two speed probes compares with the reference rotation velocity of said rotary encoder respectively.
For realizing that the accuracy between the different rotating speeds sensor is contrasted; Preferably, the comparative result of the said processing unit tach signal that also is used for producing according to said at least two speed probes and the reference rotation velocity of said rotary encoder carries out accuracy to said at least two speed probes and contrasts.
For realizing to the measuring accuracy of different sensors and the contrast of resolving power; Preferably; The said processing unit also continuous tach signal through receiving said at least two speed probes compares with the continuous reference rotation velocity of said rotary encoder respectively, to realize the measuring accuracy of said at least two speed probes and the contrast of resolving power.
For ease of the observation comparative result, preferably, said system also comprises: display unit, said display unit are used to show the comparative result of the reference rotation velocity of tach signal that said at least two speed probes produce and said rotary encoder.
Preferably; Said system also comprises: testing table; Said testing table comprises: base and rotating shaft; Said servomotor, signal generation apparatus and speed probe are removable respectively to be installed on the said base, and said signal generation apparatus is located in the said rotating shaft, and the rotor of said servomotor is connected with said rotating shaft.
Preferably, said at least two speed probes are selected from magnetoelectric tachometric transducer, correlation photoelectric sensor, diffuse reflection type photoelectric sensor, inductance type transducer, hall sensor, fluted body photoelectric sensor, reflective photoelectric sensor, gear velocity sensor and reluctance type speed probe.
Embodiment 1
With an embodiment the present invention is described below, but does not limit protection scope of the present invention.With reference to Fig. 2 (not shown processing unit), the system in the present embodiment comprises: base 1, left bracing frame 2, bolt 3, rotating shaft 4, magneto-electric, reluctance type and gear velocity sensor support 5, magnetoelectric tachometric transducer 6, sensor nut 7, correlation photoelectric sensor (transmitting terminal) 8, correlation and reflective photoelectric sensor support 9, first have signal generation dish 10, diffuse reflection type photoelectric sensor 11, correlation photoelectric sensor (receiving end) support 12, the correlation photoelectric sensor (receiving end) 13, second of gap have gap signal generation dish 14, inductance and hall sensor support 15, inductance type transducer 16, servomotor support 17, servomotor 18, fixed electrical machinery bolt 19, spring coupling 20, right bracing frame 21, rolling bearing 22, hall sensor 23, electromagnet 24, signal generation dish pretension screw 25, be embedded with signal panels 26, fluted body photoelectric sensor 27, fluted body photoelectric sensor support 28, diffuse reflection type photoelectric sensor support 29, reflective photoelectric sensor 30, gear velocity sensor 31, reluctance type speed probe 32, the signal generation gear 33 of magnet.
The test philosophy of said speed probe is: the principle of work of inductance type transducer and hall sensor is respectively based on electromagnetic induction principle and Hall effect; Signal generation dish itself is magnetic conduction not, so be embedded with two blocks of electromagnet in the signal panels, when electromagnet turned over the measuring head of inductance type and hall sensor, the sensor output level was uprised by low, and after electromagnet turned over, output level was got back to by height, so repeatedly; Correlation photoelectric sensor principle of work is based on photoelectric effect; Signal has coiled gap, and when gap turned over the measuring head of sensor, the light that the transmitting terminal of sensor sends was received termination and receives; The receiving end output level is uprised by low, and after gap turned over, the light that transmitting terminal sends was blocked by signal panels; Output level is returned low by height, so repeatedly; Magnetoelectric tachometric transducer also is to utilize electromagnetic induction principle; Because signal gear is the magnetic conduction object, when the part that contacts with the magnetoelectric tachometric transducer measuring head when gear became tooth root by tooth top, the sensor output level was by high step-down, and when becoming tooth top by tooth root, output level is high by hanging down back, so repeatedly.
Compare with prior art, the system of present embodiment has merged all kinds of typical sensors and the multiple different measuring method of tachometric survey; And to record rotating speed with high-precision rotary encoder be standard, utilizes processing unit to accomplish the contrast of said speed probe; And can accomplish the comparison of dynamic perfromances such as selected sensor response speed and accuracy of measurement in real time; And the contrast of selected sensor measurement precision and resolving power.Be the comparison of all kinds of speed probes in the engineering test, flexible, a powerful test platform is provided.Have that real-time is good, convenient, efficient, robotization and intelligent degree advantages of higher.
The invention also discloses a kind ofly, said method comprising the steps of based on the said multisensor test method of type speed test system relatively:
S1: servomotor drives signal generation apparatus and is rotated, the signal that at least two speed probes receive said signal generation apparatus respectively and sent;
S2: processing unit receives the tach signal that the reference rotation velocity that rotary encoder sent and said at least two speed probes in the said servomotor produce;
S3: said processing unit compares the tach signal that said two speed probes produce respectively at least with said reference rotation velocity.
Preferably, also comprise step after the step S3:
S401: the tach signal that said processing unit produces according to said two speed probes at least carries out accuracy with the comparative result of the reference rotation velocity of said rotary encoder to said at least two speed probes and contrasts.
Preferably, further comprising the steps of after the step S3:
S411: the continuous tach signal that said processing unit receives said at least two speed probes compares with the continuous reference rotation velocity of said rotary encoder respectively, to realize the measuring accuracy of said at least two speed probes and the contrast of resolving power.
Preferably; Processing unit described in the step S411 adopts the measured frequency method, surveys the said continuous tach signal of at least a acquisition in periodic method and the measured frequency/periodic method; Said measured frequency method promptly utilizes the output umber of pulse that speed probe produces in one section Fixed Time Interval to confirm rotating speed; Said survey periodic method is the recurrence interval to confirm rotating speed through the time interval of measuring two adjacent pulses of speed probe promptly, and the measurement employing of adjacent two rotational speed pulse signal times is counted known high-frequency pulse signal and realized; Said measured frequency/periodic method is the combination of preceding two kinds of methods, and promptly simultaneously detection time and speed probe produced in this detection time tacho-pulse number are confirmed rotating speed; In this embodiment; Adopting measured frequency/periodic method to record rotating speed to rotary encoder is reference rotation velocity, utilizes processing unit to realize the comparison of said different rotating speeds sensor accuracy, measuring accuracy and resolving power of tachometer value under at least a methods such as measured frequency method, survey periodic method and measured frequency/periodic method.
Above embodiment only is used to explain the present invention; And be not limitation of the present invention; The those of ordinary skill in relevant technologies field under the situation that does not break away from the spirit and scope of the present invention, can also be made various variations and modification; Therefore all technical schemes that are equal to also belong to category of the present invention, and scope of patent protection of the present invention should be defined by the claims.
Claims (10)
1. a multisensor compares type speed test system; It is characterized in that; Said system comprises: servomotor, signal generation apparatus, processing unit and at least two speed probes; Said servomotor comprises rotary encoder; Said processing unit is connected respectively with said rotary encoder, two speed probes, servomotor and signal generation apparatus at least, and when said servomotor drove said signal generation apparatus and is rotated, said at least two speed probes received the signal that is sent by said signal generation apparatus respectively; Said processing unit is a standard with the measured reference rotation velocity of said rotary encoder, and the tach signal that said at least two speed probes are produced compares.
2. the system of claim 1; It is characterized in that said processing unit also is used for according to the comparative result of the reference rotation velocity of the tach signal of said at least two speed probes generation and said rotary encoder said at least two speed probes being carried out the accuracy contrast.
3. the system of claim 1; It is characterized in that; The said processing unit also continuous tach signal through receiving said at least two speed probes compares with the continuous reference rotation velocity of said rotary encoder respectively, to realize the measuring accuracy of said at least two speed probes and the contrast of resolving power.
4. the system of claim 1 is characterized in that, said system also comprises: display unit, said display unit are used to show the comparative result of the reference rotation velocity of tach signal that said at least two speed probes produce and said rotary encoder.
5. the system of claim 1; It is characterized in that; Said system also comprises: testing table, and said testing table comprises: base and rotating shaft, said servomotor, signal generation apparatus and speed probe are removable respectively to be installed on the said base; Said signal generation apparatus is located in the said rotating shaft, and the rotor of said servomotor is connected with said rotating shaft.
6. like each described system in the claim 1～5; It is characterized in that said at least two speed probes are selected from magnetoelectric tachometric transducer, correlation photoelectric sensor, diffuse reflection type photoelectric sensor, inductance type transducer, hall sensor, fluted body photoelectric sensor, reflective photoelectric sensor, gear velocity sensor and reluctance type speed probe.
7. one kind based on the test method of type speed test system relatively of each said multisensor in the claim 1～6, it is characterized in that, said method comprising the steps of:
S1: servomotor drives signal generation apparatus and is rotated, the signal that at least two speed probes receive said signal generation apparatus respectively and sent;
S2: processing unit receives the tach signal that the reference rotation velocity that rotary encoder sent and said at least two speed probes in the said servomotor produce;
S3: said processing unit compares the tach signal that said two speed probes produce respectively at least with said reference rotation velocity.
8. method as claimed in claim 7 is characterized in that, also comprises step after the step S3:
S401: the tach signal that said processing unit produces according to said two speed probes at least carries out accuracy with the comparative result of the reference rotation velocity of said rotary encoder to said at least two speed probes and contrasts.
9. method as claimed in claim 7 is characterized in that, and is further comprising the steps of after the step S3:
S411: the continuous tach signal that said processing unit receives said at least two speed probes compares with the continuous reference rotation velocity of said rotary encoder respectively, to realize the measuring accuracy of said at least two speed probes and the contrast of resolving power.
10. method as claimed in claim 9 is characterized in that, processing unit described in the step S411 adopts the measured frequency method, surveys the said continuous tach signal of at least a acquisition in periodic method and the measured frequency/periodic method.
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| CN2012100623395A CN102608358A (en) | 2012-03-09 | 2012-03-09 | System and method for multi-sensor comparative rotation speed test |
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| CN2012100623395A CN102608358A (en) | 2012-03-09 | 2012-03-09 | System and method for multi-sensor comparative rotation speed test |
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Cited By (12)
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| CN103513062A (en) * | 2013-10-08 | 2014-01-15 | 潍柴动力股份有限公司 | Contrast test device of speed sensor |
| CN103884871A (en) * | 2014-03-31 | 2014-06-25 | 深圳市华星光电技术有限公司 | Tachometer correcting value measurement method and device |
| CN104360105A (en) * | 2014-11-14 | 2015-02-18 | 宁波南车时代传感技术有限公司 | General testing system for railway vehicle velocity sensor |
| CN104569493A (en) * | 2013-10-24 | 2015-04-29 | 大陆汽车电子(长春)有限公司 | Tooth pitch error test system |
| CN104634994A (en) * | 2014-12-19 | 2015-05-20 | 上海交通大学 | Rotating speed measuring device for harmonic gear reducer |
| CN106248997A (en) * | 2016-08-22 | 2016-12-21 | 沈阳华创风能有限公司 | A kind of speed probe test equipment |
| CN108519500A (en) * | 2018-04-11 | 2018-09-11 | 航天科技控股集团股份有限公司 | Car speed sensor comparison type detection device |
| CN110992791A (en) * | 2019-12-06 | 2020-04-10 | 芜湖赛宝机器人产业技术研究院有限公司 | Multi-mode servo motor teaching system and operation method thereof |
| CN111060717A (en) * | 2019-12-23 | 2020-04-24 | 广电计量检测（西安）有限公司 | Angular velocity sensor testing machine |
| CN111190029A (en) * | 2019-12-20 | 2020-05-22 | 福建福清核电有限公司 | System and method for cross comparison of steam-driven pump speed sensors of nuclear power plant |
| CN111366742A (en) * | 2020-03-06 | 2020-07-03 | 苏州浪潮智能科技有限公司 | Fan rotating speed detection device and method based on server |
| CN111965380A (en) * | 2020-07-31 | 2020-11-20 | 同济大学 | Rotating speed measurement demonstration platform and method integrating multiple rotating speed measurement methods |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103513062A (en) * | 2013-10-08 | 2014-01-15 | 潍柴动力股份有限公司 | Contrast test device of speed sensor |
| CN104569493A (en) * | 2013-10-24 | 2015-04-29 | 大陆汽车电子(长春)有限公司 | Tooth pitch error test system |
| CN104569493B (en) * | 2013-10-24 | 2018-09-07 | 大陆汽车电子(长春)有限公司 | Pitch error tests system |
| CN103884871A (en) * | 2014-03-31 | 2014-06-25 | 深圳市华星光电技术有限公司 | Tachometer correcting value measurement method and device |
| CN104360105A (en) * | 2014-11-14 | 2015-02-18 | 宁波南车时代传感技术有限公司 | General testing system for railway vehicle velocity sensor |
| CN104634994A (en) * | 2014-12-19 | 2015-05-20 | 上海交通大学 | Rotating speed measuring device for harmonic gear reducer |
| CN104634994B (en) * | 2014-12-19 | 2018-04-20 | 上海交通大学 | Rotation-speed measuring device for harmonic gear reducer |
| CN106248997A (en) * | 2016-08-22 | 2016-12-21 | 沈阳华创风能有限公司 | A kind of speed probe test equipment |
| CN108519500A (en) * | 2018-04-11 | 2018-09-11 | 航天科技控股集团股份有限公司 | Car speed sensor comparison type detection device |
| CN110992791A (en) * | 2019-12-06 | 2020-04-10 | 芜湖赛宝机器人产业技术研究院有限公司 | Multi-mode servo motor teaching system and operation method thereof |
| CN111190029A (en) * | 2019-12-20 | 2020-05-22 | 福建福清核电有限公司 | System and method for cross comparison of steam-driven pump speed sensors of nuclear power plant |
| CN111060717A (en) * | 2019-12-23 | 2020-04-24 | 广电计量检测（西安）有限公司 | Angular velocity sensor testing machine |
| CN111366742A (en) * | 2020-03-06 | 2020-07-03 | 苏州浪潮智能科技有限公司 | Fan rotating speed detection device and method based on server |
| CN111366742B (en) * | 2020-03-06 | 2022-03-04 | 苏州浪潮智能科技有限公司 | Fan rotating speed detection device and method based on server |
| CN111965380A (en) * | 2020-07-31 | 2020-11-20 | 同济大学 | Rotating speed measurement demonstration platform and method integrating multiple rotating speed measurement methods |
| CN111965380B (en) * | 2020-07-31 | 2023-08-01 | 同济大学 | Rotating speed measurement demonstration platform and method integrating multiple rotating speed measurement methods |
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Application publication date: 20120725 |