CN206331023U - A kind of charging pile pipette tips CC signal acquisition circuits - Google Patents
A kind of charging pile pipette tips CC signal acquisition circuits Download PDFInfo
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- CN206331023U CN206331023U CN201621311297.4U CN201621311297U CN206331023U CN 206331023 U CN206331023 U CN 206331023U CN 201621311297 U CN201621311297 U CN 201621311297U CN 206331023 U CN206331023 U CN 206331023U
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- resistance
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- operational amplifier
- power supply
- rifle
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Abstract
The utility model is related to charging pile technical field, specifically, is related to a kind of charging pile pipette tips CC signal acquisition circuits.It includes plugging in rifle CC voltages modulate circuit, isolation amplifier circuit, insulating power supply circuit and discharge circuit；Insulating power supply circuit includes DC DC insulating power supply chips, plug in the joint YCINOV that rifle CC voltages modulate circuit includes being used to be connected with plug in rifle CC, joint YCINOV accesses DC DC insulating power supply chip outputs by a resistance R1 simultaneously, and joint YCINOV rear classes pass sequentially through resistance R3 and resistance R8 ground connection；Isolation amplifier circuit includes isolation amplifier chip, and isolation amplifier chip includes input VIN, in-phase output end VOUT+ and reversed-phase output VOUT, and input VIN is connected with resistance R3 rear classes；Discharge circuit includes operational amplifier, and the in-phase end of operational amplifier is connected with in-phase output end VOUT+, and the end of oppisite phase of operational amplifier is connected with reversed-phase output VOUT, and operational amplifier output terminal is connected with host computer.The utility model possesses the preferably linearity and antijamming capability, and power consumption is relatively low.
Description
Technical field
The utility model is related to charging pile technical field, specifically, is related to a kind of charging pile pipette tips CC signal acquisitions electricity
Road.
Background technology
Electric stake plug in rifle during, it usually needs to plug in rifle CC (Connection Confirm) signal be acquired with
To judge whether charging pile pipette tips are plugged, in order to avoid because being charged by force when pipette tips are not plugged, and cause contact of the pipette tips with gun platform
Resistance is excessive, and then causes the contingencies such as on fire, blast.
The plug in rifle CC signal acquisition circuits of current most of charging piles are generally constructed to " front end amplifier, middle ledger line
The mode of optocoupler, back segment amplifier ", this mode linearity is not so good, and it is many to be related to separating component, power consumption also phase
To larger.
Utility model content
Content of the present utility model is to provide a kind of charging pile pipette tips CC signal acquisition circuits, and it can overcome prior art
Certain or some defects.
According to a kind of charging pile pipette tips CC signal acquisition circuits of the present utility model, it includes plugging in rifle CC voltages conditioning electricity
Road, isolation amplifier circuit, insulating power supply circuit and discharge circuit；Insulating power supply circuit includes DC-DC insulating power supply chips, and its
Input is+5V, and output end is also+5V；The joint YCINOV that rifle CC voltages modulate circuit includes being used to be connected with plug in rifle CC is inserted,
Joint YCINOV accesses DC-DC insulating power supply chip outputs by a resistance R1 simultaneously, and joint YCINOV rear classes are passed sequentially through
Resistance R3 and resistance R8 ground connection；Isolation amplifier circuit includes isolation amplifier chip, and isolation amplifier chip includes input VIN, same
Phase output terminal VOUT+ and reversed-phase output VOUT-, input VIN are connected with resistance R3 rear classes；Discharge circuit includes operation amplifier
Device, operational amplifier constitutes differential amplifier circuit, and the in-phase end of operational amplifier is connected with in-phase output end VOUT+, and computing is put
The end of oppisite phase of big device is connected with reversed-phase output VOUT-, and operational amplifier output terminal is connected with host computer.
In a kind of charging pile pipette tips CC signal acquisition circuits of the present utility model, isolation amplifier circuit and discharge circuit are set
Meter, enable to the signal received at host computer can possess it is anti-interference in the preferably linearity and gatherer process can be compared with
It is good.Further, since the utility model no longer use in existing homogeneous circuit such as optocoupler, so as to greatly reduce separating component
Quantity, and then be capable of the power consumption of the effectively whole circuit of larger reduction.
Preferably, resistance R8 two ends are parallel with electric capacity C11.So as to be preferably filtered to collection signal.
Preferably, resistance R3 rear classes are in series with resistance R4 with input VIN parts, provided with electricity between resistance R4 rear classes and ground connection
Hold C12.Resistance R4 and electric capacity C12 can constitute RC filter circuits, so as to preferably filter out clutter.
Preferably, resistance R1 resistance is 1K Ω for 3.3K Ω, resistance R3 and resistance R8 resistance.So that adopting
Collecting voltage can have preferable voltage's distribiuting stage, and zmodem.
Brief description of the drawings
Fig. 1 be embodiment 1 in a kind of charging pile pipette tips CC signal acquisition circuits circuit block diagram；
Fig. 2 be embodiment 1 in a kind of charging pile pipette tips CC signal acquisition circuits circuit diagram；
Fig. 3 be embodiment 1 in insulating power supply circuit circuit diagram；
Fig. 4 be embodiment 1 in plug in rifle CC voltage modulate circuits circuit diagram；
Fig. 5 be embodiment 1 in isolation amplifier circuit circuit diagram；
Fig. 6 be embodiment 1 in discharge circuit circuit diagram；
Circuit diagrams of the Fig. 7 for the plug in rifle CC voltages modulate circuit in embodiment 1 during rifle is inserted；
Fig. 8 is that the plug in rifle CC voltages modulate circuit in embodiment 1 is inserting circuit diagram when rifle is completed.
Embodiment
To further appreciate that content of the present utility model, the utility model is described in detail in conjunction with the accompanying drawings and embodiments.
It should be appreciated that embodiment be only the utility model is explained and and it is non-limiting.
Embodiment 1
As shown in Figure 1, 2, a kind of charging pile pipette tips CC signal acquisition circuits are present embodiments provided, it includes plugging in rifle CC electricity
Press modulate circuit, isolation amplifier circuit, insulating power supply circuit and discharge circuit.
As shown in figure 3, insulating power supply circuit includes existing DC-DC insulating power supplies chip U1, and its input voltage and defeated
Go out voltage and be+5V.
As shown in figure 4, the joint YCINOV that rifle CC voltages modulate circuit includes being used to be connected with plug in rifle CC is inserted, joint
YCINOV accesses DC-DC insulating power supply chips U1 output end by a resistance R1 simultaneously, and joint YCINOV rear classes are passed sequentially through
Resistance R3 and resistance R8 ground connection.
In the present embodiment, resistance R1 resistance is 1K Ω for 3.3K Ω, resistance R3 and resistance R8 resistance；Resistance R8 two
End is parallel with electric capacity C11, and electric capacity C11 constitutes one-level filter circuit；Resistance R3 rear classes are in series with resistance R4, and resistance R4 rear classes are with connecing
Between ground secondary filter circuit is constituted provided with electric capacity C12, resistance R4 and electric capacity C12.
As shown in figure 5, isolation amplifier circuit includes isolation amplifier chip U2, isolation amplifier chip U2 includes input side and powered
Hold VDD1, input VIN, shut-off end SHDN, input feeder ear VDD2, in-phase output end VOUT in earth terminal GND1, output
+, reversed-phase output VOUT- and output side earth terminal GND2.
In the present embodiment, input side feeder ear VDD1 access DC-DC insulating power supply chips U1 output end, output side powers
End VDD2 is passed through+5V voltages, and input VIN access resistance R4 rear classes turn off end SHDN, inputted in earth terminal GND1 and output
Earth terminal GND2 is grounded, and it is that isolation is grounded to input the earth terminal GND2 in earth terminal GND1 and output.
As shown in fig. 6, discharge circuit includes operational amplifier U3, operational amplifier U3 and resistance R5, resistance R9, resistance R2
Differential amplifier circuit is collectively formed with resistance R10, and the in-phase end of operational amplifier passes through resistance R5 and in-phase output end VOUT+
Connection, the end of oppisite phase of operational amplifier is connected by resistance R9 with reversed-phase output VOUT-, and resistance R2 is located at operational amplifier U3
In-phase end and ground connection between, resistance R10 located at operational amplifier U3 end of oppisite phase and output end between, operational amplifier U3 output
End is connected with host computer MCU AD pins.
In the present embodiment, resistance R5 and resistance R9 resistance are equal and are 100K Ω, resistance R2 and resistance R10 resistance
It is equal and be 200K Ω；Resistance R6 and electric capacity C9, resistance are also connected between operational amplifier U3 in-phase end and end of oppisite phase simultaneously
R6 and electric capacity C9 is used to filter certain common mode disturbances；Resistance R2 two ends are parallel with electric capacity C7, and resistance R10 two ends are parallel with
Electric capacity C13, electric capacity C7 and electric capacity C13 are used to provide differential signal filter function；Operational amplifier U3 output is additionally provided with
RC filter circuits are constituted by resistance R7 and electric capacity C10.
Pass through above-mentioned circuit structure so that the Acquisition Circuit in the present embodiment possesses the preferably linearity and anti-interference energy
Power, and power consumption is relatively low.
A kind of course of work of charging pile pipette tips CC signal acquisition circuits of the present embodiment mainly includes following 3 stages：
1st, start to plug in the rifle stage
The circuit diagram of rifle CC voltage modulate circuits is now inserted referring to Fig. 4.+ 5V isolation voltages are by resistance R1, R3 and R8 partial pressure
Afterwards, signal carries out one-level filtering by electric capacity C11, then secondary filter is carried out by R4, C12 again, subsequently into isolation amplifier
Chip U2, now the voltage into isolation amplifier chip U2 inputs VIN be：
VIN=+5V* [R8/ (R1+R3+R8)]=5* [1/ (3.3+1+1)] V=5/5.3V.
In addition, the multiplication factor of isolation amplifier circuit in the present embodiment is 1, VIN successively through isolation amplifier circuit and fortune
Put after processing of circuit, export and be to the voltage of host computer MCU AD pins：
VOUT=VIN*1*R2/R5=(5/5.3) * 1* (200/100)=1.887V.
2nd, the rifle stage is inserted
The circuit diagram of rifle CC voltage modulate circuits is now inserted referring to Fig. 7 ,+5V isolation voltages are by resistance R1, R3, R8 and R11
(R11 resistances be 1K Ω) partial pressure, now the voltage into isolation amplifier chip U2 inputs VIN be：
VIN=VIN* { 1/ [(R3+2) * R1+R3+1] }=5/11.9V.
Export and be to the voltage of host computer MCU AD pins：
VOUT=VIN*1*R2/R5=(5/11.9) * 1* (200/100)=0.84V
3rd, rifle succeeded stages are inserted
The circuit diagrams of rifle CC voltage modulate circuits is now inserted referring to Fig. 8 ,+5V isolation voltages by resistance R1, R3, R8, R11 and
R12 (R12 resistances be 1K Ω) partial pressure, now the voltage into isolation amplifier chip U2 inputs VIN be：
VIN=VIN* { 1/ [(2*R3+3) * R1+R3+1] }=5/18.5V.
Export and be to the voltage of host computer MCU AD pins：
VOUT=VIN*1*R2/R5=(5/18.5) * 1* (200/100)=0.54V
Schematically the utility model and embodiments thereof are described above, the description does not have restricted, accompanying drawing
Shown in be also one of embodiment of the present utility model, actual structure is not limited thereto.So, if this area
Those of ordinary skill enlightened by it, do not departing from the case that the utility model creates objective, designed without creative
The frame mode similar to the technical scheme and embodiment, all should belong to protection domain of the present utility model.
Claims (4)
1. a kind of charging pile pipette tips CC signal acquisition circuits, it is characterised in that：Including plugging in rifle CC voltages modulate circuit, isolation amplifier
Circuit, insulating power supply circuit and discharge circuit；Insulating power supply circuit include DC-DC insulating power supply chips, and its input for+
5V, output end is also+5V；Plug in the joint YCINOV that rifle CC voltages modulate circuit includes being used to be connected with plug in rifle CC, joint
YCINOV accesses DC-DC insulating power supply chip outputs by a resistance R1 simultaneously, and joint YCINOV rear classes pass sequentially through resistance
R3 and resistance R8 ground connection；Isolation amplifier circuit includes isolation amplifier chip, and isolation amplifier chip includes input VIN, with mutually defeated
Go out to hold VOUT+ and reversed-phase output VOUT-, input VIN is connected with resistance R3 rear classes；Discharge circuit includes operational amplifier,
Operational amplifier constitutes differential amplifier circuit, and the in-phase end of operational amplifier is connected with in-phase output end VOUT+, operational amplifier
End of oppisite phase be connected with reversed-phase output VOUT-, operational amplifier output terminal is connected with host computer.
2. a kind of charging pile pipette tips CC signal acquisition circuits according to claim 1, it is characterised in that：Resistance R8 two ends are simultaneously
It is associated with electric capacity C11.
3. a kind of charging pile pipette tips CC signal acquisition circuits according to claim 2, it is characterised in that：Resistance R3 rear classes with
Input VIN parts are in series with resistance R4, and electric capacity C12 is provided between resistance R4 rear classes and ground connection.
4. a kind of charging pile pipette tips CC signal acquisition circuits according to claim 3, it is characterised in that：Resistance R1 resistance
Resistance for 3.3K Ω, resistance R3 and resistance R8 is 1K Ω.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621311297.4U CN206331023U (en) | 2016-12-02 | 2016-12-02 | A kind of charging pile pipette tips CC signal acquisition circuits |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621311297.4U CN206331023U (en) | 2016-12-02 | 2016-12-02 | A kind of charging pile pipette tips CC signal acquisition circuits |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206331023U true CN206331023U (en) | 2017-07-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621311297.4U Active CN206331023U (en) | 2016-12-02 | 2016-12-02 | A kind of charging pile pipette tips CC signal acquisition circuits |
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| CN (1) | CN206331023U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112986665A (en) * | 2021-03-30 | 2021-06-18 | 中国南方电网有限责任公司超高压输电公司梧州局 | Secondary ground grid voltage monitoring device and method |
-
2016
- 2016-12-02 CN CN201621311297.4U patent/CN206331023U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112986665A (en) * | 2021-03-30 | 2021-06-18 | 中国南方电网有限责任公司超高压输电公司梧州局 | Secondary ground grid voltage monitoring device and method |
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