CN2158096Y - Chopper - Google Patents
Chopper Download PDFInfo
- Publication number
- CN2158096Y CN2158096Y CN 93204739 CN93204739U CN2158096Y CN 2158096 Y CN2158096 Y CN 2158096Y CN 93204739 CN93204739 CN 93204739 CN 93204739 U CN93204739 U CN 93204739U CN 2158096 Y CN2158096 Y CN 2158096Y
- Authority
- CN
- China
- Prior art keywords
- chopper
- speed
- circuit
- motor
- frequency
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000007493 shaping process Methods 0.000 claims abstract description 5
- 230000007547 defect Effects 0.000 abstract 2
- 230000033228 biological regulation Effects 0.000 abstract 1
- 238000002955 isolation Methods 0.000 abstract 1
- 230000006641 stabilisation Effects 0.000 abstract 1
- 238000011105 stabilization Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 3
- 238000005070 sampling Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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- Control Of Direct Current Motors (AREA)
Abstract
The utility model relates to a chopper. The utility model is mainly composed of a direct current power supply, a speed regulation and stabilization circuit, a chopping disk, a photoelectric isolation switch, a shaping circuit, a frequency display system, and an amplifier. The integral type chopper is assembled by the collection of all the components, overcoming the defects of an existing chopper, wherein, the defects of the existing chopper refer to that the existing chopper is divided into two bodies, and digital frequency is not displayed.
Description
The utility model belongs to the luminous energy modulating apparatus.
Existing chopper mainly shows electronic system, motor by power supply, transformer, frequency modulation and frequency and cuts CD and formed.Said motor is generally stepper motor or DC velocity measuring group of motors.On one-piece construction,, generally all pursue little volume in order to match with photelectric receiver, amplifier and other electronic device.Therefore, existing chopper generally is power supply and electronic system and other parts to be separated make the structure of two body separate types.Also handlebar power supply and transformer are made of one, and remainder is made of one, and the former volume is less, and latter's volume is bigger, seems pleasant.Yet the chopper of all two body separate types uses equal inconvenience.In addition, existing chopper does not all have the digital frequency meter of real-time monitoring frequency, and the index dial that has only indication to cut light frequency is used as the indication when adjusting frequency.Desire at work to know and whether cut light frequency, then must insert digital frequency meter in addition and monitor in real time accurately with stable.
The utility model improves existing chopper in order to overcome above-mentioned shortcoming, and it is little and have the numerical frequency display system and show in real time and cut the monoblock type chopper of light frequency to design a kind of volume.
The technical solution of the utility model is that the speed that adopts armature supply sampling method simple in structure to carry out motor is regulated and control, and this has just simplified control circuit and can use common direct current generator, thereby volume is dwindled greatly.Adopt the very little highly integrated numerical frequency display circuit of volume in addition again and display screen is placed on and show in real time on the panel of chopper and cut light frequency.
Below in conjunction with description of drawings concrete structure of the present utility model, the utility model mainly by direct supply 1, governing speed and steady speed controlled circuit 2, cut CD 3, photoelectric switch 4, shaping circuit 5, frequency display circuit 6 and amplifier 7 and formed.In the commercial power socket with 220 volts of attaching plug insertions, after becoming direct current by direct supply, driving the edge by the motor in the governing speed and steady speed controlled circuit has the CD 3 of cutting of many holes or breach that it is rotated according to desired speed, at this moment just the incident beam of cutting CD is cut into interrupted light beam, and rotating speed of motor is according to the desired light frequency of cutting, and the speed-regulating potentiometer W by governing speed and steady speed controlled circuit sets.When cutting CD 3 and rotate, the photoelectric switch that is placed on its periphery place is also exported a frequency synchronous electric signal identical with cutting light frequency, through being divided into two-way after the shaping circuit shaping, wherein one the road delivering to the frequency display system and shows in real time cutting light frequency.This frequency display system is made up of pulse per second (PPS) generation and reset circuit, 7217 general-purpose calculator chips and LCD.The socket 8 that amplifier 7 amplifies frequency signal of back output output line to Fig. 3 is delivered on another road.
Above-mentioned governing speed and steady speed controlled circuit such as Fig. 2 mainly are made up of speed-regulating potentiometer W, comparer I, common DC motor M, amplifier II, III and resistance R.If the resistance of armature is R
a, armature supply is i
a, the electromotive force constant of electromotive force is K
e, the angular velocity of motor is ω, and the enlargement factor of amplifier II is K, and the output voltage of comparer is V, and the output voltage of amplifier III is V
g, then have:
V＝（R
a＋R
s）i
a＋K
eω
As the R that satisfies condition
1=R
2, R
a=(K+1) R
sAnd K＜0 o'clock,
Therefore, the output voltage V of amplifier III
gBe proportional to the velocity of rotation ω of motor, and it is added to the negative input end of comparer I, the positive input termination reference level V of this comparer
i, this level is set by speed-regulating potentiometer W.The both end voltage of motor M is being controlled in the output of comparer, when motor speed diminishes, and V
gDescend, the voltage V of comparer output is raise, so motor is accelerated.When motor speed increases, V
gRise, the voltage V of comparer output is descended, so motor is decelerated.Only work as V
gNear datum V
iThe time, the terminal voltage of motor is just stable.When needing to change the speed of motor, as long as adjust datum V
i, just can obtain needed motor speed.This kind adjusting is the armature supply sampling method with the method for control motor speed.
Fig. 3 is a contour structures of the present utility model, and meaning and Fig. 1 of digital representative wherein are identical.
The utility model has the advantages that all parts of set are assembled into one, and the numerical frequency display system is arranged, can show in real time and cut light frequency, therefore can at any time understand and cut light frequency and stability thereof, thereby overcome the shortcoming that existing chopper is separated into two bodies and does not have numerical frequency to show.
Claims (2)
1, a kind of chopper, mainly by direct supply [1], governing speed and steady speed controlled circuit [2], cut CD [3], photoelectric switch [4], shaping circuit [5], frequency display system [6] and amplifier [7] and formed, it is characterized in that the circuit that governing speed and steady speed controlled circuit is made up of speed-regulating potentiometer [W], comparer [I], common DC motor [M], amplifier [II, III] and resistance R.
2,, it is characterized in that the frequency display system is by pulse per second (PPS) generation and reset circuit, the numerical frequency display system that 7217 universal counter chips and LCD are formed according to the described chopper of claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93204739 CN2158096Y (en) | 1993-02-24 | 1993-02-24 | Chopper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93204739 CN2158096Y (en) | 1993-02-24 | 1993-02-24 | Chopper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2158096Y true CN2158096Y (en) | 1994-03-02 |
Family
ID=33788209
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93204739 Expired - Fee Related CN2158096Y (en) | 1993-02-24 | 1993-02-24 | Chopper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2158096Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101086475B (en) * | 2006-06-09 | 2011-11-30 | 深圳迈瑞生物医疗电子股份有限公司 | Air measuring device with rotation speed automatic control function and air measuring method |
-
1993
- 1993-02-24 CN CN 93204739 patent/CN2158096Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101086475B (en) * | 2006-06-09 | 2011-11-30 | 深圳迈瑞生物医疗电子股份有限公司 | Air measuring device with rotation speed automatic control function and air measuring method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |