CN106100019B - UAV system communication equipment DC power supply charger - Google Patents
UAV system communication equipment DC power supply charger Download PDFInfo
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- CN106100019B CN106100019B CN201610419784.0A CN201610419784A CN106100019B CN 106100019 B CN106100019 B CN 106100019B CN 201610419784 A CN201610419784 A CN 201610419784A CN 106100019 B CN106100019 B CN 106100019B
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- power supply
- charging
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- voltage
- resistance
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
Abstract
UAV system communication equipment DC power supply charger, including charge power supply, it is electrically charged power supply and charging reference voltage, it further include level-one charging module and second level charging module, level-one charging module and second level charging module output end are connected separately with the first capacitor and the second capacitor of other end ground connection；The effect of the level-one charging module is the voltage value that the voltage of first capacitor is charged to charging reference voltage；The effect of the second level charging module is the voltage value that the voltage of the second capacitor is charged to charge power supply；It further include bleeder circuit, the bleeder circuit exports the charging reference voltage；It further include being connected to the load open circuit protection module being electrically charged between power supply and ground.Present invention reduces Ripple Noises when power source charges, and data loading density can be improved, and improve communication data transfer efficiency, are provided simultaneously with open circuit detection and defencive function.
Description
Technical field
The invention belongs to electronic communication fields, are related to a kind of communication charging equipment, and in particular to a kind of UAV system communication
Equipment DC power supply charger.
Background technique
In electronic equipment of various, different modules usually requires different DC power supplies, usually by a DC power supply
It is charged to other power supplys to obtain the DC power supply of different potentials.For communication equipment, with power consumption and signal voltage width
The reduction of degree, it is smaller and smaller for the noise signal tolerance of system, when especially power supply noise is superimposed upon on signal, for letter
Number distortion influence embody more and more significant influence with the reduction of supply voltage.In the communication equipment of UAV system,
Since power supply itself is converted by mechanical energy, power supply itself oneself has stronger ripple, in communication frequency height, information density
When big communication, influence of noise is more severe.
Overtension on output end in order to prevent, and also to keep power supply smaller from zero load to fully loaded load effect,
Switching power supply output end is generally not allowed open circuit.When empty or external circuit is opened a way, output end voltage can rise very
Height will lead to the component in damage circuit, or even the electric capacity of voltage regulation that breakdown is external.
Summary of the invention
To reduce distorted signals caused by power supply noise is superimposed upon on signal of communication, guarantee that open circuit safety, the present invention disclose
A kind of UAV system communication equipment DC power supply charger.
UAV system communication equipment DC power supply charger of the present invention, including charge power supply, be electrically charged power supply and fill
Electrical reference voltage, which is characterized in that further include level-one charging module and second level charging module, level-one charging module and second level charge
Module output end is connected separately with the first capacitor and the second capacitor of other end ground connection；
The effect of the level-one charging module is the voltage value that the voltage of first capacitor is charged to charging reference voltage；
The effect of the second level charging module is that the voltage of the second capacitor is charged to the voltage value for being electrically charged power supply；
It further include bleeder circuit, the bleeder circuit exports the charging reference voltage, and its voltage value is made to be located at charging
Between power supply and the voltage value for being electrically charged power supply；
It further include being connected to the load open circuit protection module being electrically charged between power supply and ground, the load open circuit protection module
It is made of comparator, transistor, detection resistance, output divider resistance string, Alternative load resistance and open-circuit-protection reference voltage, institute
The normal phase input end connection open-circuit-protection reference voltage of comparator is stated, output end concatenates ground by output divider resistance, described defeated
The intermediate node of divider resistance string connects transistor base out, and the collector of the transistor connects quilt by Alternative load resistance
Charge power supply, emitter ground connection, the detection resistance be connected between load resistance tie point, load resistance connection
The inverting input terminal of point connection comparator, the transistor are NPN pipe.
Preferably, the power end of the comparator is connect with power supply is electrically charged, and the open-circuit-protection reference voltage is by connecting
It is generated in the first divider resistance being electrically charged between power supply and ground and the second divider resistance, first divider resistance and second point
The normal phase input end of the common end connection comparator of piezoresistance, first divider resistance and the second divider resistance resistance value are identical.
Preferably, light emitting diode is connected between the emitter and ground.
Preferably, the bleeder circuit is resistance string, and resistance string both ends are separately connected charge power supply and are electrically charged power supply, electricity
The inside arbitrary node of resistance string is as charging reference voltage output.
Preferably, the level-one charging module includes the first operational amplifier, the first charging device, and first operation is put
The output end of big device connects the first charging device control terminal, and the input terminal of first charging device connects charge power supply, output
The reverse input end of the first operational amplifier of end connection, the positive input connection charging benchmark electricity of first operational amplifier
Pressure, further includes the current-limiting resistance being connected between the first charging device output end and ground, and the first charging device output end is also with the
One capacitance connection.
Preferably, the second level charging module includes second operational amplifier, the second charging device, and second operation is put
The output end of big device connects the second charging device control terminal, the input terminal of second charging device and second operational amplifier
Positive input connects the output end of the first charging device；The output end of second charging device and second operational amplifier it is reversed
Input terminal and be electrically charged power supply connection, the second charging device output end also with the second capacitance connection.
Using UAV system communication equipment DC power supply charger of the present invention, it is applied to during DC charging,
Primary charging is divided into charging process twice, reduces Ripple Noise when power source charges, while real by detection output electric current
Now open circuit detection, accesses Alternative load in load open circuit, limits the raising of output end voltage, and safe and reliable protects out
Component in powered-down source circuit will not damage.
Detailed description of the invention
Fig. 1 is that a kind of specific implementation application mode of UAV system communication equipment DC power supply charger of the present invention is shown
It is intended to；
Fig. 2 is a kind of specific embodiment schematic diagram of bleeder circuit of the present invention；
Fig. 3 is a kind of specific embodiment schematic diagram of load open circuit protection module of the present invention；
Figure appended drawing reference title are as follows: VH- charge power supply, VL- are electrically charged power supply, VM- medium voltage, VREF- charging benchmark
Voltage, AMP1-the first operational amplifier, AMP2- second operational amplifier, the first charging device of M1-, the second charger of M2-
Part, RLIM- current-limiting resistance, RL- load resistance, C1- first capacitor, the second capacitor of C2-, OLP- load open circuit protection module；
The 5th divider resistance of R22-, the 6th divider resistance of R23-；
A- load resistance tie point, COMP- comparator, VD- light emitting diode, M- transistor, R1- first divide electricity
Resistance, the second divider resistance of R2-, R3- third divider resistance, the 4th divider resistance of R4-, RLB- Alternative load resistance, RS- detection
Resistance.
Specific embodiment
With reference to the accompanying drawing, specific embodiments of the present invention will be described in further detail.
A kind of UAV system communication equipment DC power supply charger of the present invention, including charge power supply, it is electrically charged power supply
And charging reference voltage, it further include level-one charging module and second level charging module, level-one charging module and second level charging module are defeated
Outlet is connected separately with the first capacitor and the second capacitor of other end ground connection；
The effect of the level-one charging module is the voltage value that the voltage of first capacitor is charged to charging reference voltage；
The effect of the second level charging module is that the voltage of the second capacitor is charged to the voltage value for being electrically charged power supply；
Charging module can be using existing various charging modes, such as the setting of LDO follower, Switching Power Supply etc., this Shen
It please be reduction ripple, it is preferred to use operational amplifier connects into the form of follower.
In specific embodiment shown in FIG. 1, the level-one charging module includes the first operational amplifier, the first charger
The output end of part, first operational amplifier connects the first charging device control terminal, the input terminal of first charging device
Charge power supply is connected, output end connects the reverse input end of the first operational amplifier, and the forward direction of first operational amplifier is defeated
Enter end connection charging reference voltage, further includes the current-limiting resistance being connected between the first charging device output end and ground；First fills
Electrical part output end is also connect with first capacitor.
The second level charging module includes second operational amplifier, the second charging device, the second operational amplifier
Output end connects the second charging device control terminal, and the input terminal of second charging device and the forward direction of second operational amplifier are defeated
Enter the output end of the first charging device of end connection；The output end of second charging device and the reverse input end of second operational amplifier
And it is electrically charged power supply connection；Second charging device output end also with the second capacitance connection.
It further include bleeder circuit, the bleeder circuit exports the charging reference voltage, and its voltage value is made to be located at charging
Between power supply and the voltage value for being electrically charged power supply.
As shown in Figure 1, it is assumed that charging voltage VH=10, being electrically charged voltage VL initial value is that zero, VREF is predetermined to be (VH+
VL)/2.The type of attachment of VREF=5V under original state, the first operational amplifier AMP1 make its output end voltage level off to just
To input terminal voltage, i.e. charging reference voltage VREF；The middle voltage VM of first operational amplifier output terminal is passed through with the first fortune
After calculating the level-one charging module that amplifier is core, obtained middle voltage VM=5V.
In Fig. 1 the first capacitor C1 and current-limiting resistance RLIM of level-one charging module output end collectively constitute output filter with
Reduce output ripple.Current-limiting resistance RLIM can also limit the maximum current of the first charging device M1 simultaneously, and device is avoided to damage,
Storage capacitor of the first capacitor C1 as middle voltage VM.
Second level charging module charges to the second capacitor C2 using middle voltage VM as power supply, second operational amplifier
AMP2 is identical as the connection type of the first operational amplifier AMP1, and second operational amplifier is played with load resistance RL fills in level-one
The effect of current-limiting resistance RLIM in electric module.
It is preferable to use the stronger NMOS devices of current capacity under same area for charging device in two charging modules.
Second level charging module approaches the voltage value for being electrically charged voltage VL towards the voltage value of VM.
Bleeder circuit is to make its voltage value moment between charging voltage VH for generating charging reference voltage VREF, key
Be electrically charged between voltage VL, thus allow VREF with VL rise and rise, and with VH decline and decline.
Fig. 2 provides a kind of normal method of bleeder circuit, is connected in series with divider resistance, is marked by the way that VREF in Fig. 2 is arranged
Infuse the resistance proportion at node both ends, the different functions relationship of available VREF and VH and VL.Such as the 5th partial pressure electricity
Hinder the typical case that R22 is equal to the 6th divider resistance R23, VREF=(VH+VL)/2.
Illustrate charging process of the invention below,
For VH=10V, the original state of VL=0V, VREF=VM=5V at this time, but when VL is charged to 1V, at this time VREF
=(10+1)/2=5.5V, steady state voltage of the VM in level-one charging module at this time is 5.5V, for being electrically charged voltage VL=1V
State, pressure difference remains within 4.5V or so.
When VL is charged to 2V, VREF=(10+2)/2=6V, i.e. VREF=6V, VM can be charged to 6V at this time, at this point for
It is electrically charged the state of voltage VL=2V, pressure difference maintains 4V or so.
It is closer to VH when VL is charged to, such as when 9V, VREF=(10+9)/2=9.5V, VM can be charged to 9.5V at this time, this
When for being electrically charged the state of voltage VL=9V, pressure difference maintains 0.5V or so.
It is enumerated and is not difficult to find out by the above state, in the present invention, using two-stage charging mode, complete basic charge function
While rising to VL persistently constantly close to VH, at level-one charging module, the pressure difference of middle voltage VM and charging voltage VH；
And at second level charging module, middle voltage VM and the pressure difference for being electrically charged voltage VL are limited in the range less than VH-VL
It is interior, to actually reduce under traditional level-one charge mode, cause power supply output high current since pressure difference is excessive and easy to form
The phenomenon that larger ripple.Two-stage charged form is utilized simultaneously, so that output stage device can choose the lower low-voltage device of pressure voltage
Part, reduces the pressure-resistant technique of entire IC chip, to avoid using expensive high-voltage chip processing procedure, with more cheap
Low pressure process completes During high voltage charge, saves manufacturing cost.
Medium voltage, which follows, to be electrically charged voltage and is gradually increasing, and charging voltage difference amplitude linearity reduces, and voltage change process is steady
Without mutation, further reduces system noise and the secondary interference of data information can be improved due to the reduction of power supply ripple
Data loading density also improves communication data transfer efficiency.
The effect of load open circuit protection module be monitoring load resistance RL whether be electrically charged power supply VL and connect, and to circuit
It is protected, when normal use, load resistance RL connects load resistance tie point A and is electrically charged between power supply VL, works as load
When resistance does not access, no electric current on detection resistance RS, A point voltage is zero, and comparator normal phase input end voltage is greater than zero
Open-circuit-protection reference voltage.Comparator output high level signal makes after the partial pressure of output divider resistance string in transistor M
Base voltage the threshold V T of the transistor, transistor turns is still greater than, Alternative load resistance RLB access is electrically charged electricity
Between source and ground, the zero load for being electrically charged power end is avoided.RLB resistance value answers value larger, avoids meaningless power consumption, usually exists
More than megaohm rank, output divider resistance string is connected in series by third divider resistance R3 and the 4th divider resistance R4, after partial pressure
Voltage should be greater than common transistor threshold voltage, such as when output high level is 5V, and the resistance value ratio of R3 and R4 can be with
4:1 or so is selected, in intermediate node output voltage 1.25V, it is ensured that the conducting of transistor, range of choice can be in numbers million to 10,000,000
Between Europe, to provide certain base current, can connect light emitting diode VD between the emitter and ground of transistor M,
When transistor turns, which also shines and makes unloaded prompt.When load resistance RL access, there is electric current on RS and have
Pressure drop, comparator inverting input terminal voltage are higher than open-circuit-protection reference voltage, export low level signal, and transistor cutoff is spare
Load resistance RLB does not access circuit.To further increase output voltage degree of safety, can also be electrically charged between power end and ground
Connect zener diode.
For open-circuit-protection reference voltage, preferably by being connected on the first divider resistance being electrically charged between power supply and ground and
Two divider resistances generate, the normal phase input end of the common end connection comparator of first divider resistance and the second divider resistance,
The first divider resistance R1 and the second divider resistance R2 resistance value are identical.Simplify design, it is no longer necessary to additional DC power supply
Or chip provides, while the rule of supply voltage half or so is typically occurred according to comparator gain maximum, enables R1=R2,
Comparator, as power supply, ensure that the detection accuracy of comparator is maximum using output voltage.
Previously described is each preferred embodiment of the invention, if the preferred embodiment in each preferred embodiment
It is not obvious contradictory or premised on a certain preferred embodiment, each preferred embodiment can any stack combinations
Use, the design parameter in the embodiment and embodiment only for the purpose of clearly stating the inventor's invention verification process, and
It is non-to limit scope of patent protection of the invention, scope of patent protection of the invention is still subject to the claims, all
It is that similarly should be included in protection model of the invention with the variation of equivalent structure made by specification and accompanying drawing content of the invention
In enclosing.
Claims (3)
1. UAV system communication equipment DC power supply charger, including charge power supply, it is electrically charged power supply and charging reference voltage,
It is characterized in that, further includes level-one charging module and second level charging module, level-one charging module and second level charging module output end divide
It is not connected with the first capacitor and the second capacitor of other end ground connection；
The effect of the level-one charging module is the voltage value that the voltage of first capacitor is charged to charging reference voltage；
The effect of the second level charging module is that the voltage of the second capacitor is charged to the voltage value for being electrically charged power supply；
It further include bleeder circuit, the bleeder circuit exports the charging reference voltage, and its voltage value is made to be located at charge power supply
And it is electrically charged between the voltage value of power supply；The bleeder circuit be resistance string, resistance string both ends be separately connected charge power supply and by
Charge power supply, the inside arbitrary node of resistance string is as charging reference voltage output；
Further include being connected to the load open circuit protection module being electrically charged between power supply and ground, the load open circuit protection module by than
It is formed compared with device, transistor, detection resistance, output divider resistance string, Alternative load resistance and open-circuit-protection reference voltage, the ratio
Normal phase input end compared with device connects open-circuit-protection reference voltage, and output end concatenates ground, the output point by output divider resistance
The intermediate node of piezoresistance string connects transistor base, and the collector of the transistor is electrically charged by the connection of Alternative load resistance
Power supply, emitter ground connection, the detection resistance be connected between load resistance tie point, the load resistance tie point connects
The inverting input terminal of comparator is connect, the transistor is NPN pipe；
The level-one charging module includes the first operational amplifier, the first charging device, the output of first operational amplifier
The first charging device control terminal of end connection, the input terminal of first charging device connect charge power supply, output end connection first
The reverse input end of operational amplifier, the positive input connection charging reference voltage of first operational amplifier further include
The current-limiting resistance being connected between the first charging device output end and ground, the first charging device output end also connect with first capacitor
It connects.
The second level charging module includes second operational amplifier, the second charging device, the output of the second operational amplifier
The second charging device control terminal of end connection, the input terminal of second charging device and the positive input of second operational amplifier
Connect the output end of the first charging device；The output end of second charging device and the reverse input end of second operational amplifier and by
Charge power supply connection, the second charging device output end also with the second capacitance connection.
2. UAV system communication equipment DC power supply charger as described in claim 1, which is characterized in that the comparator
Power end is connect with power supply is electrically charged, and the open-circuit-protection reference voltage is by being connected on be electrically charged between power supply and ground first point
Piezoresistance and the second divider resistance generate, and the common end connection comparator of first divider resistance and the second divider resistance is just
Phase input terminal, first divider resistance and the second divider resistance resistance value are identical.
3. UAV system communication equipment DC power supply charger as described in claim 1, which is characterized in that the transistor hair
Light emitting diode is connected between emitter-base bandgap grading and ground.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610419784.0A CN106100019B (en) | 2016-06-14 | 2016-06-14 | UAV system communication equipment DC power supply charger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610419784.0A CN106100019B (en) | 2016-06-14 | 2016-06-14 | UAV system communication equipment DC power supply charger |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106100019A CN106100019A (en) | 2016-11-09 |
| CN106100019B true CN106100019B (en) | 2019-04-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201610419784.0A Active CN106100019B (en) | 2016-06-14 | 2016-06-14 | UAV system communication equipment DC power supply charger |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7919954B1 (en) * | 2006-10-12 | 2011-04-05 | National Semiconductor Corporation | LDO with output noise filter |
| CN102681584A (en) * | 2012-05-30 | 2012-09-19 | 昆山锐芯微电子有限公司 | Low noise bandgap reference circuit and reference source generation system |
| CN204681245U (en) * | 2015-06-19 | 2015-09-30 | 国网四川省电力公司南充供电公司 | Power source loads open loop protection circuit |
-
2016
- 2016-06-14 CN CN201610419784.0A patent/CN106100019B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7919954B1 (en) * | 2006-10-12 | 2011-04-05 | National Semiconductor Corporation | LDO with output noise filter |
| CN102681584A (en) * | 2012-05-30 | 2012-09-19 | 昆山锐芯微电子有限公司 | Low noise bandgap reference circuit and reference source generation system |
| CN204681245U (en) * | 2015-06-19 | 2015-09-30 | 国网四川省电力公司南充供电公司 | Power source loads open loop protection circuit |
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| Publication number | Publication date |
|---|---|
| CN106100019A (en) | 2016-11-09 |
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Effective date of registration: 20190329 Address after: 312500 Dong Chen 111, East West Village, Chengtan Town, Xinchang, Shaoxing, Zhejiang Applicant after: ZHEJIANG JIAYUDA MACHINERY Co.,Ltd. Address before: 610000 No. 4-302, No. 3 South Third Section of Second Ring Road, Wuhou District, Chengdu City, Sichuan Province Applicant before: Luo Yanping |
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Effective date of registration: 20221207 Address after: 710000 No. 30203, 2/F, Building 1, No. 39, Chuangye Avenue, New Industrial Park, Xi'an, Shaanxi Patentee after: XI'AN GUANDE ELECTRONIC TECHNOLOGY Co.,Ltd. Address before: 312500 Dong Chen 111, East West Village, Chengtan Town, Xinchang, Shaoxing, Zhejiang Patentee before: ZHEJIANG JIAYUDA MACHINERY Co.,Ltd. |
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