CN205486338U - Circuit protector against power failure and have its flight data record appearance - Google Patents
Circuit protector against power failure and have its flight data record appearance Download PDFInfo
- Publication number
- CN205486338U CN205486338U CN201620017846.0U CN201620017846U CN205486338U CN 205486338 U CN205486338 U CN 205486338U CN 201620017846 U CN201620017846 U CN 201620017846U CN 205486338 U CN205486338 U CN 205486338U
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- circuit
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- power
- chip
- down protection
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model relates to an unmanned aerial vehicle data record technical field that flies, concretely relates to circuit protector against power failure and have its flight data record appearance. Circuit protector against power failure includes: the lithium cell, have the LDO voltage stabilizing circuit of LDO steady voltage chip, the IN end and the EN of LDO steady voltage chip hold the positive negative pole of connecting the lithium cell respectively, power supply switching circuit has PMOS pipe Q3 and diode D5, and PMOS pipe Q3's drain electrode and the OUT who communicates to LDO steady voltage chip hold, and diode D5 sets up the grid at PMOS pipe Q3, the comparator circuit has comparator chip U11, and the positive pole of lithium cell is connected to comparator chip U11's REF end, and comparator chip U11's OUT end is connected to between PMOS pipe Q3's the grid and diode D5 positive pole, and the external power source input is connected to comparator chip U11's IN end, power filter circuit. The utility model discloses circuit and flight data record appearance adopt the power down protection design of lithium cell, and it is more reliable to make power down protection handle to this circuit possesses the low -power consumption characteristic, makes the power down protection time longer.
Description
Technical field
This utility model relates to unmanned plane during flying Data recording technique field, is specifically related to a kind of power down protection
Circuit and there is its flight data recorders.
Background technology
In unmanned plane, install flight data recorders additional can effectively store record flight data, it is possible to for nothing
Man-machine aviation accident analysis provides strong evidence.After orthodox flight process, flight data recorders also may be used
The strong reference of flight parameter is improved as analysis.
Traditional flight data recorders for middle-size and small-size unmanned plane, at power down protection design aspect, one
As use bulky capacitor to carry out power down protection design, but owing to bulky capacitor has service life, and losing
Cannot detect during effect, therefore the method exists the long-time integrity problem used.Traditional flight number
According in monitor, often use the storage card such as SD card or Mirco SD card as storage medium, flying
During machine flight, due to vibration problems, storage card loose contact may be caused, cause loss of data.It addition,
Traditional flight data recorders does not has Air Diary management function, and long-time use is difficult to inquiry first
Front flying quality, and, use unified bus or the flight number of multichannel mode record-setting flight device
According to, do not have versatility, and communication data bandwidth is less.
Summary of the invention
The purpose of this utility model is to provide a kind of power-down protection circuit and has its flight data recording
Instrument, to solve at least one technical problem above-mentioned.
The technical solution of the utility model is:
A kind of power-down protection circuit, including:
Lithium battery；
LDO mu balanced circuit, including LDO voltage stabilizing chip, the IN end of described LDO voltage stabilizing chip and EN
End connects the both positive and negative polarity of described lithium battery respectively；
Power supply switch circuit, including PMOS Q3 and diode D5, the leakage of described PMOS Q3
Pole and the OUT terminal being communicated to described LDO voltage stabilizing chip, the positive pole of described diode D5 is connected to described
The grid of PMOS Q3, the negative pole of described diode D5 is connected to the source electrode of described PMOS Q3；
Comparator circuit, the REF end including comparator chip U11, described comparator chip U11 connects
The positive pole of described lithium battery, the OUT terminal of described comparator chip U11 is connected to described PMOS Q3
Grid and described diode D5 positive pole between, the IN end of described comparator chip U11 connects external electrical
Source input；
Electric source filter circuit, is arranged between described diode D5 negative pole and circuit output end.
Alternatively, described LDO mu balanced circuit also includes electric capacity C39, electric capacity C40, electric capacity C41, electricity
Hold C42, electric capacity C45 and resistance R40；
Described electric capacity C39 and electric capacity C40 is arranged in parallel in described lithium battery both positive and negative polarity and described LDO voltage stabilizing
On circuit between IN end and the EN end of chip, and described electric capacity C40 is also connected with common port；
Described electric capacity C41 and electric capacity C42 be arranged in parallel described comparator chip U11 OUT terminal with
Between common port；
Described electric capacity C45 and resistance R40 series connection, more in parallel with described electric capacity C39 and electric capacity C40.
Alternatively, described power supply switch circuit also includes resistance R36, is arranged in series in described PMOS
Between grid and the positive pole of described diode D5 of Q3.
Alternatively, described comparator circuit also includes resistance R35, is arranged in series in described comparator chip
Between IN end and the common port of U11.
Alternatively, described electric source filter circuit includes electric capacity C49, electric capacity C43 and the electricity being arranged in parallel
Hold C44.
This utility model additionally provides a kind of flight data recorders, including power supply and microprocessor,
Between described power supply and described microprocessor, employing is the power-down protection circuit of any of the above-described.
Alternatively, described microprocessor offers 3 road serial interfaces and 1 tunnel CAN interface, institute
State microprocessor to be connected with unmanned aerial vehicle onboard equipment by described serial interface and CAN interface.
Alternatively, described flight data recorders also includes the storage chip being connected with described microprocessor.
Alternatively, described microprocessor offers USB interface, for carrying out USB with external equipment
Communication.
Alternatively, described flight data recorders also includes the display lamp being connected with described microprocessor, uses
In the electricity of the lithium battery in described power-down protection circuit is shown
The beneficial effects of the utility model:
Power-down protection circuit of the present utility model and have its flight data recorders, uses lithium battery
Power down protection designs, and makes power down protection process relatively reliable, and this circuit possesses low power consumption characteristic, makes
Obtain the power down protection time longer.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of this utility model power-down protection circuit；
Fig. 2 is the hardware connection figure of this utility model flight data recorders.
Detailed description of the invention
Clearer for the purpose making this utility model implement, technical scheme and advantage, below in conjunction with this
Accompanying drawing in utility model embodiment, is carried out in further detail the technical scheme in this utility model embodiment
Description.In the accompanying drawings, the most same or similar label represents same or similar element or tool
There is the element of same or like function.Described embodiment is a part of embodiment of this utility model, and
It is not all, of embodiment.The embodiment described below with reference to accompanying drawing is exemplary, it is intended to be used for
Explain this utility model, and it is not intended that to restriction of the present utility model.Based in this utility model
Embodiment, those of ordinary skill in the art obtained under not making creative work premise all its
His embodiment, broadly falls into the scope of this utility model protection.Below in conjunction with the accompanying drawings to reality of the present utility model
Execute example to be described in detail.
In description of the present utility model, it is to be understood that term " " center ", " longitudinally ", " laterally ",
"front", "rear", "left", "right", " vertically ", " level ", " top ", " end ", " interior ", " outward " etc.
Orientation or the position relationship of instruction are based on orientation shown in the drawings or position relationship, are for only for ease of and retouch
State this utility model and simplify description rather than instruction or imply that the device of indication or element must have spy
Fixed orientation, with specific azimuth configuration and operation, therefore it is not intended that this utility model is protected model
The restriction enclosed.
1 to Fig. 2 is to this utility model power-down protection circuit and the flying quality with it below in conjunction with the accompanying drawings
Monitor is described in further details.
A kind of power-down protection circuit that this utility model provides, including lithium battery, LDO mu balanced circuit, electricity
Source switching circuit, comparator circuit and electric source filter circuit.
Lithium battery (BT1) can use known multiple applicable lithium battery, and its voltage preferably exists
Between 3.6V-4.2V.
LDO mu balanced circuit includes LDO voltage stabilizing chip；Wherein, the IN end of LDO voltage stabilizing chip and EN
End connects the both positive and negative polarity of described lithium battery respectively, LDO voltage stabilizing chip also there is GND end (common port).
Power supply switch circuit includes PMOS Q3 (low reverse current leakage PMOS) and diode D5
(low reverse current leakage diode)；The drain electrode of PMOS Q3 and the OUT being communicated to LDO voltage stabilizing chip
End, the positive pole of diode D5 is connected to the grid of PMOS Q3, and the negative pole of diode D5 is connected to
The source electrode of PMOS Q3.
Comparator circuit includes that the REF end of comparator chip U11, comparator chip U11 connects lithium battery
Positive pole, the OUT terminal of comparator chip U11 is connected to the grid of PMOS Q3 and diode D5
Between positive pole, the IN end of comparator chip U11 connects external power input (Ext), comparator chip
U11 also has GND end；Further, in the present embodiment, it is preferred to use ultra-low power consumption comparer chip U11,
To reduce power consumption, it is possible to solve some lithium battery as the bigger problem of power down protection power consumption；It addition,
The present embodiment peripheral power supply is preferably 3.6V.
Electric source filter circuit is arranged between diode D5 negative pole and circuit output end (CVV), and circuit is defeated
Going out voltage is 3.3V；Wherein, electric source filter circuit is for removing the power-supply fluctuation caused when power supply switches.
This utility model provides in power-down protection circuit, and lithium battery goes out 3.3V by mu balanced circuit voltage stabilizing and enters
Power supply switch circuit, externally fed Ext3.6V also connects power supply switch circuit.When there is external power source
During Ext3.6V, the external power source Ext3.6V voltage stabilizing of having powered of power supply switch circuit control system obtains
VCC3.3V.When system power failure, comparator circuit output level change, power supply switch circuit switching by
Lithium battery power supply.This utility model provides in power-down protection circuit, when lithium battery reaches service life,
It is capable of detecting when, hence in so that power down protection processes reliable, and owing to lithium battery capacity is relatively big, power down
Guard time is longer, relative to traditional power-off protection method using electric capacity, better reliability, it is allowed to
The power down protection of longer time processes.
Further, LDO mu balanced circuit can also include electric capacity C39, electric capacity C40, electric capacity C41, electricity
Hold C42, electric capacity C45 and resistance R40；Wherein, electric capacity C39 capacitance size is 10 μ F, electric capacity
The capacitance size of C40 and electric capacity C41 is 0.1uF, and the capacitance size of electric capacity C42 and electric capacity C45 is equal
For 1uF.Electric capacity C39 and electric capacity C40 is arranged in parallel the IN at lithium battery both positive and negative polarity Yu LDO voltage stabilizing chip
On circuit between end and EN end, and electric capacity C40 is also connected with common port (GND)；Electric capacity C41
With electric capacity C42 is arranged in parallel between OUT terminal and the common port of comparator chip U11；Electric capacity C45
Connect with resistance R40, more in parallel with electric capacity C39 and electric capacity C40.
Power supply switch circuit also includes that resistance R36, resistance R36 resistance sizes are 1K (kilo-ohm)；R36
It is arranged in series between the grid of PMOS Q3 and the positive pole of diode D5.
Comparator circuit also includes that resistance R35, resistance R35 resistance sizes are 10K；Resistance R35 connects
It is arranged between IN end and the common port of comparator chip U11, i.e. with external power input (Ext)
In parallel.
Electric source filter circuit includes electric capacity C49, electric capacity C43 and the electric capacity C44 being arranged in parallel；Wherein,
The capacitance size of electric capacity C4 is 220 μ F, and the capacitance size of electric capacity C43 is 0.1 μ F, electric capacity C44's
Capacitance size is 10 μ F.
This utility model additionally provides a kind of flight data recorders, including power supply and microprocessor,
Using between power supply and microprocessor is above-mentioned power-down protection circuit.The external power source of power-down protection circuit is defeated
Enter end (Ext) and connect the driving power supply of flight data recorders.
This utility model flight data recorders, uses the power down protection design of lithium battery, makes power down protection
Process relatively reliable, and this circuit possesses low power consumption characteristic so that the power down protection time is longer.
Further, microprocessor offers 3 road serial interfaces and 1 tunnel CAN interface, micro-process
Device is connected with unmanned aerial vehicle onboard equipment by serial interface and CAN interface, and airborne equipment data are passed through
3 road serial ports and 1 tunnel CAN are sent to microprocessor；It addition, also include the CAN for transceiving data
Transceiver and multi-channel serial port transceiver, and respectively with aviation plug, then set with airborne by aviation plug
Standby connection (such as power supply)；Mode due to this multichannel Yu bus so that flight data recorders is more
General, and bigger data bandwidth can be provided.
It addition, flight data recorders also includes the storage chip being connected with microprocessor；In the present embodiment
Preferably employing eMMC storage chip, this chip is the encapsulation of BGA form, can directly be welded on pcb board,
It is little that this storage chip possesses volume, the feature that capacity is big, when flight, for storage card, no
There is the integrity problem caused due to vibrations.Further, microprocessor offers USB interface and
Corresponding USB transceiver, for carrying out USB communication with external equipment.
In this utility model flight data recorders, the airborne equipment data received are carried out by microprocessor
Process, it is stored in storage chip in the form of a file.When needing to access data, USB is connected to
Computer, computer and microprocessor, by USB communication, can obtain this flight after connecting computer by USB
Daily record, when power system capacity deficiency, can remove the Air Diary created in early days automatically.Microprocessor can be by
Content in storage chip enumerates into USB flash disk, the flying quality of storage in this USB flash disk of user-accessible.
Further, flight data recorders of the present utility model can also include the finger being connected with microprocessor
Show lamp, for the electricity of the lithium battery in power-down protection circuit is shown.
The above, detailed description of the invention the most of the present utility model, but protection domain of the present utility model
It is not limited thereto, the technology model that any those familiar with the art discloses at this utility model
In enclosing, the change that can readily occur in or replacement, all should contain within protection domain of the present utility model.
Therefore, protection domain of the present utility model should be as the criterion with described scope of the claims.
Claims (10)
1. a power-down protection circuit, it is characterised in that including:
Lithium battery；
LDO mu balanced circuit, including LDO voltage stabilizing chip, the IN end of described LDO voltage stabilizing chip and EN
End connects the both positive and negative polarity of described lithium battery respectively；
Power supply switch circuit, including PMOS Q3 and diode D5, the leakage of described PMOS Q3
Pole and the OUT terminal being communicated to described LDO voltage stabilizing chip, the positive pole of described diode D5 is connected to described
The grid of PMOS Q3, the negative pole of described diode D5 is connected to the source electrode of described PMOS Q3；
Comparator circuit, the REF end including comparator chip U11, described comparator chip U11 connects
The positive pole of described lithium battery, the OUT terminal of described comparator chip U11 is connected to described PMOS Q3
Grid and described diode D5 positive pole between, the IN end of described comparator chip U11 connects external electrical
Source input；
Electric source filter circuit, is arranged between described diode D5 negative pole and circuit output end.
Power-down protection circuit the most according to claim 1, it is characterised in that described LDO voltage stabilizing
Circuit also includes electric capacity C39, electric capacity C40, electric capacity C41, electric capacity C42, electric capacity C45 and resistance
R40；
Described electric capacity C39 and electric capacity C40 is arranged in parallel in described lithium battery both positive and negative polarity and described LDO voltage stabilizing
On circuit between IN end and the EN end of chip, and described electric capacity C40 is also connected with common port；
Described electric capacity C41 and electric capacity C42 be arranged in parallel described comparator chip U11 OUT terminal with
Between common port；
Described electric capacity C45 and resistance R40 series connection, more in parallel with described electric capacity C39 and electric capacity C40.
Power-down protection circuit the most according to claim 1, it is characterised in that described power supply switching electricity
Road also includes resistance R36, is arranged in series in the grid of described PMOS Q3 with described diode D5's
Between positive pole.
Power-down protection circuit the most according to claim 1, it is characterised in that described comparator circuit
Also include resistance R35, be arranged in series between IN end and the common port of described comparator chip U11.
Power-down protection circuit the most according to claim 1, it is characterised in that described power filter electricity
Road includes electric capacity C49, electric capacity C43 and the electric capacity C44 being arranged in parallel.
6. a flight data recorders, including power supply and microprocessor, it is characterised in that described
Using between power supply and described microprocessor is the power down protection according to any one of the claims 1-5
Circuit.
Flight data recorders the most according to claim 6, it is characterised in that described microprocessor
On offer 3 road serial interfaces and 1 tunnel CAN interface, described microprocessor is connect by described serial ports
Mouth and CAN interface are connected with unmanned aerial vehicle onboard equipment.
Flight data recorders the most according to claim 6, it is characterised in that also include with described
The storage chip that microprocessor connects.
Flight data recorders the most according to claim 6, it is characterised in that described microprocessor
On offer USB interface, for carrying out USB communication with external equipment.
Flight data recorders the most according to claim 6, it is characterised in that also include and institute
State the display lamp that microprocessor connects, for the electricity of the lithium battery in described power-down protection circuit is carried out
Display.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620017846.0U CN205486338U (en) | 2016-01-11 | 2016-01-11 | Circuit protector against power failure and have its flight data record appearance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620017846.0U CN205486338U (en) | 2016-01-11 | 2016-01-11 | Circuit protector against power failure and have its flight data record appearance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205486338U true CN205486338U (en) | 2016-08-17 |
Family
ID=56665144
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620017846.0U Active CN205486338U (en) | 2016-01-11 | 2016-01-11 | Circuit protector against power failure and have its flight data record appearance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205486338U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107124169A (en) * | 2017-04-19 | 2017-09-01 | 广州视源电子科技股份有限公司 | A kind of electronic switching circuit |
| CN110323825A (en) * | 2019-06-10 | 2019-10-11 | 厦门四信通信科技有限公司 | A kind of power circuit switching device, method and internet of things equipment |
-
2016
- 2016-01-11 CN CN201620017846.0U patent/CN205486338U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107124169A (en) * | 2017-04-19 | 2017-09-01 | 广州视源电子科技股份有限公司 | A kind of electronic switching circuit |
| CN110323825A (en) * | 2019-06-10 | 2019-10-11 | 厦门四信通信科技有限公司 | A kind of power circuit switching device, method and internet of things equipment |
| CN110323825B (en) * | 2019-06-10 | 2021-08-03 | 厦门四信通信科技有限公司 | Power circuit switching device and method and Internet of things equipment |
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| GR01 | Patent grant |