CN208043903U - A kind of busbar voltage detection circuit for servo-driver - Google Patents
A kind of busbar voltage detection circuit for servo-driver Download PDFInfo
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- CN208043903U CN208043903U CN201820524048.6U CN201820524048U CN208043903U CN 208043903 U CN208043903 U CN 208043903U CN 201820524048 U CN201820524048 U CN 201820524048U CN 208043903 U CN208043903 U CN 208043903U
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- resistance
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- busbar voltage
- circuit
- voltage detection
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Abstract
The utility model discloses a kind of busbar voltage detection circuits for servo-driver, belong to servo-driver field.The busbar voltage detection circuit is made of diode and resistance, capacitance；One group of coil of the anode connection Circuit Fault on Secondary Transformer of the diode；The cathode of the diode connects first resistor, and the first resistor is connected with second resistance, 3rd resistor；The common end of the second resistance and the first resistor passes through capacity earth；One end that the 3rd resistor is not connect with the second resistance is connected with the 4th resistance of ground connection；One end that the 3rd resistor is not connect with the second resistance connects MCU；It solves the problems, such as existing busbar voltage detection road complex circuit, be easily disturbed；Reach reduction complex circuit degree and device cost, improves the effect of circuit anti-interference.
Description
Technical field
The utility model embodiment is related to servo-driver field, more particularly to a kind of busbar electricity for servo-driver
Press detection circuit.
Background technology
Servo-driver is a kind of electronic device for control servomotor, in general AC servo driver, one
As use the structure of AC-DC-exchange, i.e. two-phase or three-phase alternating current input voltage to be converted by the fairings such as diode
Direct current, between direct current positive and negative busbar, according to the power of servo-driver, the filter capacitor of certain capacity in parallel, the filtering
Capacitance has the function of filtering and storage energy.
During the use of servo-driver, it can determine whether servo-driver is over-pressed or deficient by busbar voltage
Pressure is recycled first with the voltage after isolation linear optical coupling processing busbar voltage partial pressure in conventional busbars voltage sense line
Treated that voltage is handled to isolation linear optical coupling for operational amplifier, and operational amplifier will treated control source MCU
In.
Although the busbar voltage precision that conventional busbars voltage sense line detects is high, needed in circuit practical additional
The operational amplifier and optocoupler of offer, and the component used is more, leads to complex circuit, is easy to be interfered.
Utility model content
In order to solve problems in the prior art, the utility model embodiment provides a kind of busbar for servo-driver
Voltage detecting circuit.The technical solution is as follows：
In a first aspect, a kind of busbar voltage detection circuit for servo-driver is provided, busbar voltage detection electricity
It route diode and resistance, capacitance is constituted；
One group of coil of the anode connection Circuit Fault on Secondary Transformer of diode；
The cathode of diode connects first resistor, and first resistor is connected with second resistance, 3rd resistor；
The common end of second resistance and first resistor passes through capacity earth；
One end that 3rd resistor is not connect with second resistance is connected with the 4th resistance of ground connection；
One end that 3rd resistor is not connect with second resistance connects MCU.
Optionally, Circuit Fault on Secondary Transformer includes multigroup coil；
First group of coil of the anode connection Circuit Fault on Secondary Transformer of diode.
The advantageous effect brought of technical solution that the utility model embodiment provides is：
This is used for the busbar voltage detection circuit of servo-driver, is made of diode, resistance and capacitance, diode is just
Pole connects one group of coil of Circuit Fault on Secondary Transformer, and the cathode of diode connects first resistor, first resistor and second resistance, third
Resistance is connected, the common end of second resistance and first resistor by capacity earth, 3rd resistor do not connect with second resistance one
End is connected with the 4th resistance of ground connection, and one end that 3rd resistor is not connect with second resistance connects MCU；Solves existing busbar
Voltage detecting road complex circuit, easy the problem of being disturbed；Reduction complex circuit degree and device cost are reached, it is anti-to improve circuit
Interfering effect.
Description of the drawings
It is required in being described below to embodiment in order to illustrate more clearly of the technical scheme in the embodiment of the utility model
Attached drawing to be used is briefly described, it should be apparent that, the accompanying drawings in the following description is only some realities of the utility model
Example is applied, it for those of ordinary skill in the art, without creative efforts, can also be according to these attached drawings
Obtain other attached drawings.
Fig. 1 is a kind of electricity of busbar voltage detection circuit for servo-driver shown according to an exemplary embodiment
Road schematic diagram；
Fig. 2 is a kind of reality of busbar voltage detection circuit for servo-driver shown according to an exemplary embodiment
Apply principle partial schematic diagram.
Specific implementation mode
It is new to this practicality below in conjunction with attached drawing to keep the purpose of this utility model, technical solution and advantage clearer
Type embodiment is described in further detail.
Referring to FIG. 1, it illustrates a kind of busbares for servo-driver that the utility model one embodiment provides
The circuit diagram of voltage detecting circuit.As shown in Figure 1, busbar voltage protection circuit is made of diode, resistance and capacitance.
As shown in Figure 1, the just extremely input of busbar voltage detection circuit of the diode D1 in busbar voltage detection circuit
End, one group of coil for connecting Circuit Fault on Secondary Transformer.
Cathode connection first resistor R1, first resistor R1 and second resistance R2, the 3rd resistor R3 of diode D1 connects.
The common end of second resistance R2 and first resistor R1 are grounded by capacitance C1.
3rd resistor R3 is not connected with the 4th resistance R4 of ground connection with the one end connecting second resistance R2.
One end that 3rd resistor R3 is not connect with second resistance R2 connects MCU, i.e. 3rd resistor R3 not with second resistance R2
One end of connection sends Vdc_mcu signals to MCU.
MCU is used to the voltage signal that busbar voltage detection circuit obtains being converted to voltage value.
Busbar voltage detection circuit in actual work, by busbar voltage protect circuit input terminal and Circuit Fault on Secondary Transformer
The connection of one group of coil, wherein transformer is the transformer in the working line where servo-driver, as shown in Figure 2.
In the operating circuit of servo-driver, three-phase alternating current input rectifying device is converted into direct current, direct current warp
It crosses direct current positive and negative busbar to enter in transformer, due to the characteristics such as transformer has isolation, voltage is proportional to coil number, can pass through
Detecting Circuit Fault on Secondary Transformer voltage calculates transformer primary side voltage, that is, realizes the effect of detection busbar voltage, therefore, at this
In utility model, one group of coil of the Circuit Fault on Secondary Transformer in the input terminal and circuit of busbar voltage detection circuit connects.
As shown in Fig. 2, the anode of the diode D1 in busbar voltage detection circuit connects one group of line of Circuit Fault on Secondary Transformer
Circle.
Optionally, Circuit Fault on Secondary Transformer includes multigroup coil, and the anode of diode D1 connects the first of Circuit Fault on Secondary Transformer
Group coil N2.
As shown in Figure 1, transformer includes 4 groups of coils, the coiling rule of 4 groups of coils is as shown in Table 1：
Table one
| Coil | Originate foot | Terminate foot |
| N1 | 1 | 2 |
| N2 | 7 | 8 |
| N3 | 8 | 9 |
| N4 | 8 | 10 |
The coil turn of coil N1 is N1, the coil turn of coil N2 is N2, and the coil turn of coil N3 is N3, coil N4
Coil turn be N4, the coil turn of coil N1 to coil N4 are known parameters.
It should be noted that first resistor R1, second resistance R2,3rd resistor R3 and the in busbar voltage protection circuit
The resistance value of four resistance R4 predefines according to actual needs, and the parameter of diode D1 and capacitance C1 are true in advance also according to actual needs
It is fixed.
Assuming that the voltage in Fig. 2 between endpoint a and endpoint b is Vn1, the voltage between endpoint b and endpoint c is VDC, endpoint
Voltage between g and endpoint h is Vn2, and diode tube pressuring drop is unified for Vd.
The connection relation of transformer in busbar voltage detection circuit and circuit according to Fig.2, can be according to transformer
The relationship that coil voltage calculates Vdc_mcu and busbar voltage Vpn than relationship is：
Vpn=VDC-Vn1；(formula 1)
Vn1=(Vd+15V) * (N1/N2)；(formula 2)
VDC=(Vn2+Vd) * (N1/N2)；(formula 3)
Vdc_mcu=R4/ (R2+R3+R4) * Vn2；(formula 4)
It can be calculated by above-mentioned formula 1 to formula 4：
Vpn=[(R2+R3+R4)/R4] * (N1/N2) * Vdc_mcu-15* (N1/N2) (formula 5)
Due to second resistance R2, the resistance value of 3rd resistor R3 and the 4th resistance R4, the number of turns of coil N1 and coil N2 in formula 5
Value for known numeric value, Vdc_mcu is that MCU detects to obtain, therefore the value of Vpn can be calculated by formula 5, that is, obtains busbar electricity
Pressure.
In conclusion the busbar voltage detection circuit for servo-driver that the utility model embodiment provides, by two
Pole pipe, resistance and capacitance are constituted, one group of coil of the anode connection Circuit Fault on Secondary Transformer of diode, the cathode connection of diode the
One resistance, first resistor are connected with second resistance, 3rd resistor, and the common end of second resistance and first resistor is connect by capacitance
Ground, one end that 3rd resistor is not connect with second resistance are connected with the 4th resistance of ground connection, and 3rd resistor does not connect with second resistance
One end connection MCU connect；It solves the problems, such as existing busbar voltage detection road complex circuit, be easily disturbed；Reduction is reached
Complex circuit degree and device cost improve the effect of circuit anti-interference.
It should be noted that the implementing circuit figure of the busbar voltage detection circuit provided in the utility model embodiment is only
Exemplary illustration, those skilled in the art can not pay any wound according to the winding distribution situation of the transformer in actual circuit
The property made labour busbar voltage detection circuit and one group of coil of Circuit Fault on Secondary Transformer are connected, the utility model embodiment is to this
It is not construed as limiting.
It should be noted that：Above-mentioned the utility model embodiment serial number is for illustration only, can not represent the quality of embodiment.
The above is only the preferred embodiment of the present invention, is not intended to limit the utility model, all in this practicality
Within novel spirit and principle, any modification, equivalent replacement, improvement and so on should be included in the guarantor of the utility model
Within the scope of shield.
Claims (2)
1. a kind of busbar voltage detection circuit for servo-driver, which is characterized in that the busbar voltage detection circuit by
Diode and resistance, capacitance are constituted；
One group of coil of the anode connection Circuit Fault on Secondary Transformer of the diode；
The cathode of the diode connects first resistor, and the first resistor is connected with second resistance, 3rd resistor；
The common end of the second resistance and the first resistor passes through capacity earth；
One end that the 3rd resistor is not connect with the second resistance is connected with the 4th resistance of ground connection；
One end that the 3rd resistor is not connect with the second resistance connects MCU.
2. busbar voltage detection circuit according to claim 1, which is characterized in that the Circuit Fault on Secondary Transformer includes multigroup
Coil；
The anode of the diode connects first group of coil of the Circuit Fault on Secondary Transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820524048.6U CN208043903U (en) | 2018-04-12 | 2018-04-12 | A kind of busbar voltage detection circuit for servo-driver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820524048.6U CN208043903U (en) | 2018-04-12 | 2018-04-12 | A kind of busbar voltage detection circuit for servo-driver |
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| Publication Number | Publication Date |
|---|---|
| CN208043903U true CN208043903U (en) | 2018-11-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820524048.6U Active CN208043903U (en) | 2018-04-12 | 2018-04-12 | A kind of busbar voltage detection circuit for servo-driver |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112019818A (en) * | 2020-09-07 | 2020-12-01 | 山东联合电力产业发展有限公司 | Power line monitoring terminal system |
-
2018
- 2018-04-12 CN CN201820524048.6U patent/CN208043903U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112019818A (en) * | 2020-09-07 | 2020-12-01 | 山东联合电力产业发展有限公司 | Power line monitoring terminal system |
| CN112019818B (en) * | 2020-09-07 | 2022-06-14 | 山东联合电力产业发展有限公司 | Power line monitoring terminal system |
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