CN209400597U - Servo drive control voltage non-destructive testing circuit - Google Patents
Servo drive control voltage non-destructive testing circuit Download PDFInfo
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- CN209400597U CN209400597U CN201822042859.5U CN201822042859U CN209400597U CN 209400597 U CN209400597 U CN 209400597U CN 201822042859 U CN201822042859 U CN 201822042859U CN 209400597 U CN209400597 U CN 209400597U
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- schmidt trigger
- signal node
- rectifying part
- light emitting
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Abstract
The utility model provides a kind of servo drive control voltage non-destructive testing circuit, including rectifying part, threshold value control section, restricted portion, power pack, Schmidt trigger and output par, c；The utility model completes detection function by Schmidt trigger, loss current is only 2 μ A, avoid the larger problem of circuit loss existing for the detection method of traditional Series detectors diode, reduction of the detection circuit to servo drive control voltage output can be effectively eliminated, and the temperature rise of servo control module is avoided to increase；Meanwhile interfering with each other for detection circuit and servo control module has been isolated using the output par, c of photoelectrical coupler, increase the reliability of servo control module.
Description
Technical field
The utility model relates to voltage non-destructive testing circuits, and in particular, to a kind of lossless inspection of servo drive control voltage
When slowdown monitoring circuit more particularly to servo drive control circuit work, servo drive control voltage can be carried out non-destructive testing in real time
Circuit.
Background technique
In servo drive control system, -10V~+10V range d. c. voltage signal is generallyd use to servo-driver
It is controlled, the revolving speed of servo motor is controlled by voltage signal, -10V~+10V voltage corresponds to servo motor -3000r/
Min~+3000r/min revolving speed, servo control voltage and the linear corresponding relationship of servo motor revolving speed.In servo drive control
When system works, need to control voltage real-time perfoming detection.
As shown in Figure 1, conventional voltage detection circuit is to pass through detection two in every voltage output end Series detectors diode
Pole pipe builtin voltage realizes the calculating to servo drive control voltage.Disadvantage of this is that: servo drive control system work
When making, output electric current needs diode after testing, and the pressure drop of 1.5V or so is generated during flowing through detection diode, into
And lead to the reduction of output voltage；Due to voltage and the linear corresponding relationship of motor speed, voltage reduction will have a direct impact on servo
The revolving speed of motor, it is further to influence SERVO CONTROL precision, servo drive control system performance is caused to limit.Meanwhile two
Pole pipe power consumption is P=1.5*I, when output electric current is higher, biggish power consumption can be generated on the diode, to increase diode
Heat production, and the increase of diode institute heat production will lead to servo-control system temperature rise increase, to servo drive control systematicness
It can cause the limitation of another aspect.
Utility model content
For the defects in the prior art, the purpose of the utility model is to provide a kind of servo drive control voltage without
Damage detection circuit.
According to a kind of servo drive control voltage non-destructive testing circuit provided by the utility model, including rectifying part, limit
Stream part, power pack, Schmidt trigger and output par, c；
The rectifying part includes rectifying part input terminal and rectifying part output end；Schmidt trigger includes Schmidt
Trigger voltage input end, Schmidt trigger data input pin and Schmidt trigger data output end；
The rectifying part output end is connected by restricted portion with Schmidt trigger data input pin；Power pack with
The voltage input end of Schmidt trigger is connected；Schmidt trigger data output end is connected with output par, c.
Preferably, the power pack includes voltage signal node and earth signal node；The voltage signal node and ground
Signal node is connected with Schmidt trigger voltage input end respectively；Voltage signal node also passes through restricted portion and output par, c
It is connected；Earth signal node is also connected with rectifying part output end.
Preferably, servo drive control voltage non-destructive testing circuit provided by the utility model further includes threshold value control unit
Point；The threshold value control section is arranged between earth signal node and Schmidt trigger data input pin the two, and even
Both connect.
Preferably, the restricted portion includes the first current-limiting resistance and the second current-limiting resistance；First current-limiting resistance is set
It sets between rectifying part output end and Schmidt trigger data input pin；Second current-limiting resistance is arranged in voltage signal node
Between output par, c.
Preferably, the rectifying part includes rectifier bridge；The threshold value control section includes first resistor；The output section
Dividing includes photoelectrical coupler.
Preferably, the photoelectrical coupler includes light emitting source and light-receiving device；The light emitting source includes light emitting diode, is shone
Diode includes light emitting diode anode and light emitting diode cathode；The light emitting diode anode by the second current-limiting resistance with
Voltage signal node is connected, and light emitting diode cathode is connected with the data output end of Schmidt trigger.
According to a kind of servo drive control voltage non-destructive testing circuit provided by the utility model, including rectifying part, limit
Stream part, threshold value control section, power pack, Schmidt trigger and output par, c；
The rectifying part includes rectifying part input terminal and rectifying part output end；Schmidt trigger includes Schmidt
Trigger voltage input end, Schmidt trigger data input pin and Schmidt trigger data output end；
The rectifying part output end is connected by restricted portion with Schmidt trigger data input pin；Power pack with
The voltage input end of Schmidt trigger is connected；Schmidt trigger data output end is connected with output par, c；
The power pack includes voltage signal node and earth signal node；The voltage signal node and earth signal node
It is connected respectively with Schmidt trigger voltage input end；Voltage signal node also passes through restricted portion and is connected with output par, c；Ground
Signal node is also connected with rectifying part output end；
The threshold value control section is arranged between earth signal node and Schmidt trigger data input pin the two, and
And both connections；
The restricted portion includes the first current-limiting resistance and the second current-limiting resistance；The first current-limiting resistance setting is rectifying
Between part output end and Schmidt trigger data input pin；Second current-limiting resistance is arranged in voltage signal node and output section
/；
The rectifying part includes rectifier bridge；The threshold value control section includes first resistor；The output par, c includes
Photoelectrical coupler；
The photoelectrical coupler includes light emitting source and light-receiving device；The light emitting source includes light emitting diode, light emitting diode
Including light emitting diode anode and light emitting diode cathode；The light emitting diode anode is believed by the second current-limiting resistance and voltage
Number node is connected, and light emitting diode cathode is connected with the data output end of Schmidt trigger.
Compared with prior art, the utility model have it is following the utility model has the advantages that
1, servo drive control voltage non-destructive testing circuit provided by the utility model is completed to examine by Schmidt trigger
Brake, loss current are only 2 μ A, and it is larger to avoid circuit loss existing for the detection method of traditional Series detectors diode
The problem of；
2, servo drive control voltage non-destructive testing circuit provided by the utility model can effectively eliminate detection circuit pair
The reduction of servo drive control voltage output, and the temperature rise of servo control module is avoided to increase；
3, servo drive control voltage non-destructive testing circuit provided by the utility model is using photoelectrical coupler to Schmidt
The detection signal of trigger output exports after being isolated, and interfering with each other for detection circuit and servo control module has been isolated, and increases
The reliability of servo control module is added.
Detailed description of the invention
Upon reading the detailed description of non-limiting embodiments with reference to the following drawings, other spies of the utility model
Sign, objects and advantages will become more apparent upon:
Fig. 1 is servo drive control voltage detecting circuit schematic diagram in the prior art.
Fig. 2 is servo drive control voltage non-destructive testing circuit diagram provided by the utility model.
Specific embodiment
The utility model is described in detail combined with specific embodiments below.Following embodiment will be helpful to this field
Technical staff further understands the utility model, but does not limit the utility model in any form.It should be pointed out that ability
For the those of ordinary skill in domain, without departing from the concept of the premise utility, several changes and improvements can also be made.
These are all within the protection scope of the present invention.
Fig. 2 is servo drive control voltage non-destructive testing circuit diagram provided by the utility model, there is shown with:
| Rectifier bridge U1 | Schmidt trigger U2 | First current-limiting resistance R1 |
| Second current-limiting resistance R3 | First resistor R2 | Photoelectrical coupler B1 |
According to a kind of servo drive control voltage non-destructive testing circuit provided by the utility model, including rectifying part, limit
Stream part, power pack, Schmidt trigger U2 and output par, c；
The rectifying part includes rectifying part input terminal and rectifying part output end；Schmidt trigger U2 is close including applying
Special trigger voltage input end, Schmidt trigger data input pin and Schmidt trigger data output end；
The rectifying part output end is connected by restricted portion with Schmidt trigger data input pin；Power pack with
Schmidt trigger voltage input end is connected；Schmidt trigger data output end is connected with output par, c.
Preferably, the power pack includes voltage signal node and earth signal node；The voltage signal node and ground
Signal node is connected with Schmidt trigger voltage input end respectively；Voltage signal node also passes through restricted portion and output par, c
It is connected；Earth signal node is also connected with rectifying part output end.It further include threshold value control section；The threshold value control section setting
Both between earth signal node and Schmidt trigger data input pin the two, and connect.The restricted portion includes
First current-limiting resistance R1 and the second current-limiting resistance R3；The first current-limiting resistance R1 is arranged in rectifying part output end and Schmidt
Between flip-flop data input terminal；Second current-limiting resistance R3 is arranged between voltage signal node and output par, c.The rectification
Part includes rectifier bridge U1；The threshold value control section includes first resistor R2；The output par, c includes photoelectrical coupler B1.
The photoelectrical coupler B1 includes light emitting source and light-receiving device；The light emitting source includes light emitting diode, and light emitting diode includes hair
Optical diode anode and light emitting diode cathode；The light emitting diode anode passes through the second current-limiting resistance R3 and voltage signal section
Point is connected, and light emitting diode cathode is connected with Schmidt trigger data output end.
Specifically, Schmidt trigger U2 exports low level when detecting servo control voltage, at this time photoelectrical coupler
Conducting, Schmidt trigger export high level when not detecting servo control voltage, photoelectrical coupler ends at this time.Described
Rectifier bridge U1 selects the MB2S chip of VISAY company, by -10V~10V range servo drive control voltage signal, by whole
Stream bridge is converted to 0~10V voltage, to meet the voltage input requirement of Schmidt trigger.The Schmidt trigger is selected
The CD40106 chip of INTERSIL company.The photoelectrical coupler selects the TLP280-4 chip of TOSHIBA company, photoelectricity coupling
The output end of clutch is NPN triode, and the collector and emitter of the NPN triode exports detection collectively as output end
Consequential signal.
More specifically, signal to be detected is derived from the two ends of servo control voltage input, by Schmidt trigger to defeated
Enter voltage to be detected, loss current is only 2 μ A, rather than is sampled in servo control voltage output end series diode, is realized
Micro- loss of detection circuit.
Further, as shown in Fig. 2, the work of servo drive control voltage non-destructive testing circuit provided by the utility model
Process is as follows:
- the 10V of servo drive control voltage~10V signal, rectified bridge U1 is converted to the voltage of 0~10V, through first
Current-limiting resistance R1 is exported after first resistor R2 punishment pressure to Schmidt trigger U2, when input voltage is greater than 0.2V, Shi Mi
Special trigger U2 exports low level signal when detecting input signal, when photoelectrical coupler B1 detects that input is low level signal
When, photoelectrical coupler B1 conducting, expression detects servo control voltage；When input voltage is less than 0.2V, Schmidt trigger
U2 does not detect voltage, exports high level signal, when photoelectrical coupler B1 detects that input is high level signal, photoelectricity coupling
Clutch B1 cut-off, expression do not detect servo control voltage.
In the description of the present application, it is to be understood that term " on ", "front", "rear", "left", "right", " is erected at "lower"
Directly ", the orientation or positional relationship of the instructions such as "horizontal", "top", "bottom", "inner", "outside" is orientation based on the figure or position
Relationship is set, description the application is merely for convenience of and simplifies description, rather than the device or element of indication or suggestion meaning are necessary
It with specific orientation, is constructed and operated in a specific orientation, therefore should not be understood as the limitation to the application.
Specific embodiment of the utility model is described above.It is to be appreciated that the utility model not office
It is limited to above-mentioned particular implementation, those skilled in the art can make a variety of changes or modify within the scope of the claims,
This has no effect on the substantive content of the utility model.In the absence of conflict, the spy in embodiments herein and embodiment
Sign can be arbitrarily combined with each other.
Claims (7)
1. a kind of servo drive control voltage non-destructive testing circuit, which is characterized in that including rectifying part, restricted portion, power supply
Partially, Schmidt trigger and output par, c；
The rectifying part includes rectifying part input terminal and rectifying part output end；Schmidt trigger includes schmidt trigger
Device voltage input end, Schmidt trigger data input pin and Schmidt trigger data output end；
The rectifying part output end is connected by restricted portion with Schmidt trigger data input pin；Power pack and Shi Mi
Special trigger voltage input end is connected；Schmidt trigger data output end is connected with output par, c.
2. servo drive control voltage non-destructive testing circuit according to claim 1, which is characterized in that the power pack
Including voltage signal node and earth signal node；The voltage signal node and earth signal node are electric with Schmidt trigger respectively
Input terminal is pressed to be connected；Voltage signal node also passes through restricted portion and is connected with output par, c；Earth signal node also with rectifying part
Output end is connected.
3. servo drive control voltage non-destructive testing circuit according to claim 2, which is characterized in that further include threshold value control
Part processed；The threshold value control section is arranged between earth signal node and Schmidt trigger data input pin the two, and
And both connections.
4. servo drive control voltage non-destructive testing circuit according to claim 3, which is characterized in that the restricted portion
Including the first current-limiting resistance and the second current-limiting resistance；The first current-limiting resistance setting is touched in rectifying part output end and Schmidt
It sends out between device data input pin；Second current-limiting resistance is arranged between voltage signal node and output par, c.
5. servo drive control voltage non-destructive testing circuit according to claim 4, which is characterized in that the rectifying part
Including rectifier bridge；The threshold value control section includes first resistor；The output par, c includes photoelectrical coupler.
6. servo drive control voltage non-destructive testing circuit according to claim 5, which is characterized in that the photoelectric coupling
Device includes light emitting source and light-receiving device；The light emitting source includes light emitting diode；The light emitting diode anode passes through the second current limliting
Resistance is connected with voltage signal node, and light emitting diode cathode is connected with Schmidt trigger data output end.
7. a kind of servo drive control voltage non-destructive testing circuit, which is characterized in that including rectifying part, restricted portion, threshold value
Control section, power pack, Schmidt trigger and output par, c；
The rectifying part includes rectifying part input terminal and rectifying part output end；Schmidt trigger includes schmidt trigger
Device voltage input end, Schmidt trigger data input pin and Schmidt trigger data output end；
The rectifying part output end is connected by restricted portion with Schmidt trigger data input pin；Power pack and Shi Mi
Special trigger voltage input end is connected；Schmidt trigger data output end is connected with output par, c；
The power pack includes voltage signal node and earth signal node；The voltage signal node and earth signal node difference
It is connected with Schmidt trigger voltage input end；Voltage signal node also passes through restricted portion and is connected with output par, c；Earth signal
Node is also connected with rectifying part output end；
The threshold value control section is arranged between earth signal node and Schmidt trigger data input pin the two, and even
Both connect；
The restricted portion includes the first current-limiting resistance and the second current-limiting resistance；First current-limiting resistance is arranged in rectifying part
Between output end and Schmidt trigger data input pin；The setting of second current-limiting resistance divides it in voltage signal node and output section
Between；
The rectifying part includes rectifier bridge；The threshold value control section includes first resistor；The output par, c includes photoelectricity
Coupler；
The photoelectrical coupler includes light emitting source and light-receiving device；The light emitting source includes light emitting diode, and light emitting diode includes
Light emitting diode anode and light emitting diode cathode；The light emitting diode anode passes through the second current-limiting resistance and voltage signal section
Point is connected, and light emitting diode cathode is connected with Schmidt trigger data output end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822042859.5U CN209400597U (en) | 2018-12-06 | 2018-12-06 | Servo drive control voltage non-destructive testing circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822042859.5U CN209400597U (en) | 2018-12-06 | 2018-12-06 | Servo drive control voltage non-destructive testing circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209400597U true CN209400597U (en) | 2019-09-17 |
Family
ID=67881860
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822042859.5U Active CN209400597U (en) | 2018-12-06 | 2018-12-06 | Servo drive control voltage non-destructive testing circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209400597U (en) |
-
2018
- 2018-12-06 CN CN201822042859.5U patent/CN209400597U/en active Active
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