CN102981016A - Processing system and method for detecting rotating speed of rotating object - Google Patents
Processing system and method for detecting rotating speed of rotating object Download PDFInfo
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- CN102981016A CN102981016A CN2012105424307A CN201210542430A CN102981016A CN 102981016 A CN102981016 A CN 102981016A CN 2012105424307 A CN2012105424307 A CN 2012105424307A CN 201210542430 A CN201210542430 A CN 201210542430A CN 102981016 A CN102981016 A CN 102981016A
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Abstract
The invention relates to a processing system and a method for detecting rotating speed of a rotating object. The processing system comprises a circular photoelectric coded disc and circular PCBs (printed circuit boards), wherein a plurality of light holes are formed at the periphery of the circular photoelectric coded disc; the circular PCBs comprise a plurality of speed sampling units, signal shaping amplification unit and processing units that are electrically connected with one another; the speed sampling units are arranged at the peripheries of the circular PCBs; the signal shaping amplification units are used for shaping and amplifying collected signals into matched signals; the processing units are used for processing the matched signals; a series of pulse signals are generated when the light holes pass through one speed sampling unit; the circular PCBs are connected with the circular coded disc by a bearing; and the pulse signals are only generated in a quarter of cycle when the circular photoelectric coded disc rotates a cycle. According to the system and the method, the rotating speed of the rotating object can be measured in real time with the adoption of multiple photoelectric sensors, the special coded disc and a novel mounting form, and the high precision rotating speed measurement of digital communication is realized.
Description
Technical field
The present invention relates to Electrical Measurement System manufacturing technology field, particularly a kind of disposal system and method that detects the rotating object rotating speed.
Background technology
The speed probe of using in the motor speed measurement field has reflection type photoelectricity to managing the speed probes such as (photoelectric sensor) speed measuring device and photo-electric code-disc, incremental encoder, absolute type encoder, tech-generator.
Reflective speed probe is the simplest with its structure, does not need to be connected with rotary part and to obtain using comparatively widely.Generally, owing to 1 week of every rotation produce a pulse signal, so its measurement of rotating speed precision is not high, real-time is bad, and be not suitable for the low speed measurement;
Photo-electric code-disc speed probe is integrated in the torque rotary speed sensor usually, in the motor experiment equipment of some teaching usefulness, connect with motor coaxle, 60 teeth generally evenly distribute on rotating circular disk, although this kind sensor has improved measurement of rotating speed precision and real-time, but install complicated, and can not judge the rotation direction of rotating object, seldom use on the Practical Project;
Incremental encoder is based on Hall effect and photoelectric effect development, is used for measuring the magnetic pole location of rotating speed, relative displacement and Electric Machine Control, can judge the forward and reverse of rotating speed.The tachometric survey precision depends on the line number of the light transmission grid of carving on the code-disc, and the line number is more, and the tachometric survey precision is higher, relative positioning is more accurate, but manufacturing process is also just more complicated, and the electromagnetic interference (EMI) of testing environment is also just stronger when high speed, causes difficulty of hardware design.The difficult installation and removal of sensor and price are higher;
Absolute type encoder and can realize that rotating speed detects, magnetic pole location and absolute position detection.Its measuring accuracy depends on the figure place that sensor is exported, and figure place is more, and the precision of rotating speed and position probing is higher, there is the shortcoming of incremental encoder equally in such sensor, and the figure place of output is more, and the used signal wire of its output signal is also more, and its price is relative also the highest;
The test the speed linearity of tech-generator in the scope that entirely tests the speed is difficult for realizing, needs special analog conversion module that the voltage signal of generator is converted to tach signal, the temperature variation of motor body also can have influence on the measuring accuracy of rotating speed, and relatively difficulty is installed.
Summary of the invention
The present invention is directed to the prior art above shortcomings, a kind of disposal system and method that detects the rotating object rotating speed is provided, adopt a plurality of photoelectric sensors, special code-disc and novel installation form to realize tachometric survey to the real time rotation object having realized that the high precision velocity of digitizing communication is measured.
The present invention is achieved through the following technical solutions:
A kind of disposal system that detects the rotating object rotating speed comprises:
The circular light code disc is provided with some light holes on the circumference of circular light code disc;
Circular pcb board, comprise successively and to be electrically connected: the speed sampling unit on some circumference that are arranged on circular pcb board, be enlarged into the signal shaping amplifying unit of a matched signal in order to the signal shaping that will collect, and in order to processing the processing unit of matched signal, some light holes produce a series of pulse signals during through a speed sampling unit;
Circular pcb board is connected by a bearing with circular code-disc;
Wherein, when the circular light code disc rotates a circle, only within 1/4th weeks, produce pulse signal.
Better, light hole is arranged on the quadrant of circular light code disc, the speed sampling unit evenly is arranged on the circumference of circular pcb board; Or,
Light hole evenly is arranged on the circumference of circular light code disc, the speed sampling unit is arranged on the quadrant of circular pcb board.
Better, the inside of bearing comprises:
Thimble is slidingly connected at the inside of bearing, guarantees right alignment in the rotary course in order to the location.
Limit assembly is connected to the two ends of bearing inside, in order to limit the distance of stretching out and retreating of thimble;
Elastic parts is arranged between thimble and the limit assembly, uses so that thimble keeps original position.
Better, ring-shaped component comprises interior ring and outer shroud, the inner screwed connection of outer shroud and bearing, and the smooth thimble of being convenient to of interior ring surface moves.
Better, limit assembly comprises: in order to the ring-shaped component of the outreach that limits thimble and in order to the screw of the backway that limits thimble.
Better, the disposal system that detects the rotating object rotating speed also comprises coupling assembling, is arranged on the external part outside of the thimble in the rotating shaft, is connected with a testee in order to the disposal system that will detect the rotating object rotating speed.
Better, the speed sampling unit is photoelectric sensor.
Better, the disposal system that detects the rotating object rotating speed also comprises communication unit, in order to export the output signal of processing unit.
Better, the disposal system that detects the rotating object rotating speed also comprises the common cathode charactron, in order to the output signal of display processing unit directly perceived.
A kind of method that detects the rotating object rotating speed adopts the disposal system of above-mentioned detection rotating object rotating speed, carries out as follows:
S1, the disposal system that will detect the rotating object rotating speed are connected to carries out the rotating speed sampling on the testee, when the circular light code disc rotates a circle, and a series of pulse signals of generation within 1/4th weeks only;
S2, signal shaping amplifying unit obtain the signal of processing unit coupling with the pulse signal shaping and the amplification that collect;
S3, processing unit carry out the gating judgement and signal condition is judged;
S4, processing unit calculate tachometer value and sense of rotation.
Description of drawings
Fig. 1 is a kind of side view that detects the disposal system of rotating object rotating speed of the present invention;
Fig. 2 is the structural representation of circular light code disc in a kind of disposal system that detects the rotating object rotating speed of the present invention;
Fig. 3 is a kind of distribution schematic diagram that detects the disposal system medium velocity sampling unit of rotating object rotating speed of the present invention;
Fig. 4 is a kind of structural representation that detects the disposal system centre bearer of rotating object rotating speed of the present invention;
Fig. 5 is a kind of disposal system medium velocity sampling unit of rotating object rotating speed and circuit diagram of signal shaping amplifying unit of detecting of the present invention;
Fig. 6 is a kind of workflow diagram that detects the disposal system of rotating object rotating speed of the present invention.
Symbol description
1: the circular light code disc
2: light hole
3: circular pcb board
4: the speed sampling unit
5: bearing
52: thimble
53: elastic parts
54: screw
55: magnet
56: ring-shaped component
Embodiment
Below in conjunction with embodiment the present invention is elaborated, present embodiment is implemented under take technical solution of the present invention as prerequisite, has provided detailed embodiment, but protection scope of the present invention is not limited to following embodiment.
Please refer to Fig. 1-4, a kind of disposal system that detects the rotating object rotating speed comprises: circular light code disc 1 is provided with some light holes 2 on the circumference of circular light code disc 1; Circular pcb board 3, comprise successively and to be electrically connected: the speed sampling unit 4 on some circumference that are arranged on circular pcb board, be enlarged into the signal shaping amplifying unit of a matched signal in order to the signal shaping that will collect, and in order to processing the processing unit of matched signal, some light holes 2 produce a series of pulse signals during through a speed sampling unit 4; Circular pcb board 3 is connected by a bearing 5 with circular code-disc 1; Wherein, when circular light code disc 1 rotates a circle, only within 1/4th weeks, produce pulse signal.Within 1/4th weeks, produce pulse signal in order to reach described, can realize by two schemes: 1, light hole 2 is arranged on the quadrant of circular light code disc 1, speed sampling unit 4 evenly is arranged on the circumference of circular pcb board 3, can improve measuring accuracy by the quantity that increases light hole 2; 2, light hole 2 evenly is arranged on the circumference of circular light code disc 1, speed sampling unit 4 is arranged on the quadrant of circular pcb board 3, and sampling unit 4 can increase measuring accuracy by gathering way.
The inside of bearing 5 comprises: thimble 52, be slidingly connected at the inside of bearing, and guarantee right alignment in the rotary course in order to the location.Limit assembly, be connected to the two ends of bearing inside, comprise: in order to the ring-shaped component 56 of the outreach that limits thimble and in order to the screw 54 of the backway that limits thimble, in order to limit the distance of stretching out and retreating of thimble, ring-shaped component comprises interior ring and outer shroud, the inner screwed connection of outer shroud and bearing, the smooth thimble of being convenient to of interior ring surface moves; Elastic parts 53 is arranged between thimble 52 and the limit assembly, uses so that thimble 52 keeps original positions.
In the present embodiment, the speed sampling unit adopts 4 photoelectric sensors to be evenly distributed on the circumference of circular pcb board, 4 light holes are arranged on the quadrant of circular light code disc, quantity that can be by increasing light hole when measuring the slow-speed of revolution is as being increased to 8, improve the measurement of rotating speed precision, the technician can select as required voluntarily, and the present invention does not limit at this.Every through quadrant, one in four photoelectric sensors works in output height pulse condition.Judgement through rejection gate has one the tunnel can be input in the processing unit.In processing unit, calculate motor speed and turn to according to the M/T method.
The course of work of the present invention is as follows:
Utilize magnet 55 web members such as grade to be adsorbed onto the shaft extension place of testee (motor) disposal system of the detection rotating object rotating speed among Fig. 1, if motor-shaft extending with load, then is adsorbed on the motor-shaft extending rear end with this disposal system.
1. after powering on, rotation by motor, photoelectric sensor U1 cooperates with photoelectric code disk, measure to get the pulse of photoelectric code disk adjacent holes, as shown in Figure 5, whenever, just produce a series of pulses through a photoelectric sensor, these 4 optoelectronic switches will have a road of signal pulse to deliver to the next stage circuit through a rejection gate.Simultaneously this 4 road photosignal is received respectively four pins and be used for taking one's bearings, only draw 1 tunnel circuit diagram here, other are 3 the tunnel identical therewith.There is a road of pulse signal to enter processing unit (single-chip microcomputer) by matching program control.
2. be the rotating speed that records, the pulse of drawing from rejection gate will through an amplification and rectification circuit, be enlarged into signal shaping the signal of single-chip microcomputer coupling.This road signal is connected to the single-chip microcomputer external interrupt and triggers pin, the negative edge of pulse triggers single-chip microcomputer external interrupt 0, externally interrupts in 0 service routine first timeing closing device, high position in getting timer and the number of low level, and the recording timing device overflows a variable that has defined several times.Formula is: shu0=(flag*65536+TH0*256+TL0).Wherein shu0 is the rolling counters forward value between two negative edges of adjacent pulse, and flag is the number of times that timer overflows, and whenever overflows once this number and adds one.TH0 is the number of the high position of single-chip microcomputer timer 0, and TL0 is the timer value of timer 0 low level.Carrying out speed by the number in the timer that two are entered between the signal negative edge that external interrupt triggers pin calculates, formula is: speed=6*10^7/ (16*shu0) is so wherein the crystal oscillator of single-chip microcomputer is chosen as 12 clock period of 12MHZ and counts a number, the time of so every number is 1 delicate, each hole on the photoelectric code disk accounts for 11.25 degree, so two angles that negative edge has just passed through 22.5 degree.If like this through whole circumference, if just 16 times of two negative edges.So just can calculate all elapsed times, be converted to one minute, just obtain rotating speed speed.
3. by the software programming program sense of rotation is judged.The signal that produces according to 4 photoelectric sensors enters the sequencing of four pins corresponding to single-chip microcomputer, judges that forward still reverses.If giving four photoelectric sensor labels is 4a, 4b, 4c, 4d.If the order of signal is abcd or bcda or cdab or dabc so, motor is forward so, otherwise, be counter-rotating.
4. for the ease of field observation, when possessing with the host computer communication function, show at the scene tachometer value with the common cathode charactron.Can see intuitively like this rotating speed and turn to, make things convenient for the rotation rotating speed of field monitor rotary part.
5. the data of processing finally by single-chip microcomputer transfer data to the user by communication unit communication protocol according to the rules, can require to be chosen as one of RS485 and CAN bus mode by User.
Please refer to Fig. 6, the present invention also provides a kind of method that detects the rotating object rotating speed, adopts the disposal system of above-mentioned detection rotating object rotating speed, carries out as follows:
S1, the disposal system that will detect the rotating object rotating speed are connected to carries out the rotating speed sampling on the testee, when the circular light code disc rotates a circle, and a series of pulse signals of generation within 1/4th weeks only;
S2, signal shaping amplifying unit obtain the signal of processing unit coupling with the pulse signal shaping and the amplification that collect;
S3, processing unit carry out the gating judgement and signal condition is judged;
S4, processing unit calculate tachometer value and sense of rotation.
Advantage of the present invention: easy for installation, the tachometric survey precision is high, real-time is good, and whole range accuracy of detection one antijamming capability of making peace is strong, has realized the digitizing communication function, adopts simultaneously direct tacho-pulse to export to satisfy the different user requirement.
More than disclosed only be the application's a specific embodiment, but the application is not limited thereto, the changes that any person skilled in the art can think of all should drop in the application's the protection domain.
Claims (10)
1. a disposal system that detects the rotating object rotating speed is characterized in that, comprising:
The circular light code disc is provided with some light holes on the circumference of described circular light code disc;
Circular pcb board, comprise successively and to be electrically connected: the speed sampling unit on some circumference that are arranged on described circular pcb board, be enlarged into the signal shaping amplifying unit of a matched signal in order to the signal shaping that will collect, and in order to processing the processing unit of described matched signal, described some light holes produce a series of pulse signals during through a described speed sampling unit;
Described circular pcb board is connected by a bearing with described circular code-disc;
Wherein, when described circular light code disc rotates a circle, only within 1/4th weeks, produce described pulse signal.
2. the disposal system of detection rotating object rotating speed as claimed in claim 1 is characterized in that, described light hole is arranged on the quadrant of described circular light code disc, described speed sampling unit evenly is arranged on the circumference of described circular pcb board; Or,
Described light hole evenly is arranged on the circumference of described circular light code disc, described speed sampling unit is arranged on the quadrant of described circular pcb board.
3. the disposal system of detection rotating object rotating speed as claimed in claim 1 is characterized in that, the inside of described bearing comprises:
Thimble is slidingly connected at the inside of described bearing, guarantees right alignment in the rotary course in order to the location;
Limit assembly is connected to the two ends of described bearing inside, in order to limit the distance of stretching out and retreating of described thimble;
Elastic parts is arranged between described thimble and the described limit assembly, uses so that described thimble keeps original position.
4. the disposal system of detection rotating object rotating speed as claimed in claim 3 is characterized in that, described ring-shaped component comprises interior ring and outer shroud, the inner screwed connection of described outer shroud and described bearing, and described interior ring surface is smooth to be convenient to described thimble and to move.
5. the disposal system of detection rotating object rotating speed as claimed in claim 1 is characterized in that, described limit assembly comprises: in order to the ring-shaped component of the outreach that limits described thimble and in order to the screw of the backway that limits described thimble.
6. the disposal system of detection rotating object rotating speed as claimed in claim 1, it is characterized in that, the disposal system of described detection rotating object rotating speed also comprises coupling assembling, be arranged on the external part outside of the described thimble in the described rotating shaft, be connected with a testee in order to the disposal system with described detection rotating object rotating speed.
7. the disposal system of detection rotating object rotating speed as claimed in claim 1 is characterized in that, described speed sampling unit is photoelectric sensor.
8. the disposal system of detection rotating object rotating speed as claimed in claim 1 is characterized in that, the disposal system of described detection rotating object rotating speed also comprises communication unit, in order to export the output signal of described processing unit.
9. the disposal system of detection rotating object rotating speed as claimed in claim 1 is characterized in that, the disposal system of described detection rotating object rotating speed also comprises the common cathode charactron, in order to the output signal of the described processing unit of demonstration directly perceived.
10. a method that detects the rotating object rotating speed is characterized in that, adopts the disposal system of detection rotating object rotating speed as claimed in claim 1, carries out as follows:
S1, the disposal system that will detect the rotating object rotating speed are connected to carries out the rotating speed sampling on the testee, when the circular light code disc rotates a circle, and a series of pulse signals of generation within 1/4th weeks only;
S2, signal shaping amplifying unit obtain the signal of processing unit coupling with the pulse signal shaping and the amplification that collect;
S3, processing unit carry out the gating judgement and signal condition is judged;
S4, processing unit calculate tachometer value and sense of rotation.
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| CN2012105424307A CN102981016A (en) | 2012-12-14 | 2012-12-14 | Processing system and method for detecting rotating speed of rotating object |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014179901A1 (en) * | 2013-05-07 | 2014-11-13 | Chuang Tseng-Hsin | Center apparatus with rotating speed display |
| CN104020720B (en) * | 2014-06-13 | 2016-08-31 | 上海小松包装机械有限公司 | A kind of digitized positions reversible adjusting means of band feedback |
| CN107367304A (en) * | 2017-06-26 | 2017-11-21 | 深圳市普颂电子有限公司 | Judge the method and system in flowmeter rotor rotation revolution and direction |
| CN107999457A (en) * | 2017-11-29 | 2018-05-08 | 德淮半导体有限公司 | Rotary-cleaning equipment, detection device and detection method for rotary-cleaning equipment |
| CN108693373A (en) * | 2018-05-22 | 2018-10-23 | 西京学院 | A kind of PWM code-discs speed probe |
| CN108994455A (en) * | 2018-08-24 | 2018-12-14 | 浙江镭弘激光科技有限公司 | A kind of efficient laser boring and cleaning optical system |
| CN109182683A (en) * | 2018-11-15 | 2019-01-11 | 大永精机（福州）有限公司 | A kind of passive rotation thimble for transmission shaft quenching |
| CN109238688A (en) * | 2018-08-31 | 2019-01-18 | 武汉船用机械有限责任公司 | A kind of rotation detection device and its detection method |
| CN112230012A (en) * | 2020-10-14 | 2021-01-15 | 哈尔滨工程大学 | Instantaneous fluctuation rotating speed measuring device and method |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2014179901A1 (en) * | 2013-05-07 | 2014-11-13 | Chuang Tseng-Hsin | Center apparatus with rotating speed display |
| CN104020720B (en) * | 2014-06-13 | 2016-08-31 | 上海小松包装机械有限公司 | A kind of digitized positions reversible adjusting means of band feedback |
| CN107367304A (en) * | 2017-06-26 | 2017-11-21 | 深圳市普颂电子有限公司 | Judge the method and system in flowmeter rotor rotation revolution and direction |
| CN107999457A (en) * | 2017-11-29 | 2018-05-08 | 德淮半导体有限公司 | Rotary-cleaning equipment, detection device and detection method for rotary-cleaning equipment |
| CN108693373A (en) * | 2018-05-22 | 2018-10-23 | 西京学院 | A kind of PWM code-discs speed probe |
| CN108994455A (en) * | 2018-08-24 | 2018-12-14 | 浙江镭弘激光科技有限公司 | A kind of efficient laser boring and cleaning optical system |
| CN108994455B (en) * | 2018-08-24 | 2024-04-05 | 浙江君华智慧物联科技有限公司 | Efficient laser drilling and cleaning optical system |
| CN109238688A (en) * | 2018-08-31 | 2019-01-18 | 武汉船用机械有限责任公司 | A kind of rotation detection device and its detection method |
| CN109238688B (en) * | 2018-08-31 | 2020-12-25 | 武汉船用机械有限责任公司 | Rotation detection device and detection method thereof |
| CN109182683A (en) * | 2018-11-15 | 2019-01-11 | 大永精机（福州）有限公司 | A kind of passive rotation thimble for transmission shaft quenching |
| CN112230012A (en) * | 2020-10-14 | 2021-01-15 | 哈尔滨工程大学 | Instantaneous fluctuation rotating speed measuring device and method |
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Application publication date: 20130320 |